contains mitigation for the Spring4Shell vulnerability

Upstream changelog:

Tomcat 9.0.62 (remm)
  Catalina

    Add: Effectively disable the WebappClassLoaderBase.getResources()
    method as it is not used and if something accidently exposes the class
    loader this method can be used to gain access to Tomcat internals. (markt)

Tomcat 9.0.61 (remm)
  Catalina

    Code: Harden the CredentialHandler implementations by switching to a
    constant-time implementation for credential comparisons. (schultz/markt)

  Coyote

    Fix: Use a constant for the default TLS cipher suite. This will allow
    skipping setting it in some cases (for example, it does not make sense for
    OpenSSL TLS 1.3). (remm)
    Fix: #487: Improve logging of unknown settings frames. Pull request by
    Thomas Hoffmann. (remm)
    Add: 65975: Add a warning if a TLS virtual host is configured with
    optional certificate authentication and the containing connector is also
    configured to support HTTP/2 as HTTP/2 does not permit optional
    certificate authentication. (markt)
    Add: 65975: Add a warning if a TLS virtual host is configured for TLS
    1.3 with a JSSE implementation and a web application is configured for
    CLIENT-CERT authentication. CLIENT-CERT authentication requires
    post-handshake authentication (PHA) when used with TLS 1.3 but the JSSE
    TLS 1.3 implementation does not support PHA. (markt)
    Fix: Improve the recycling of Processor objects to make it more
    robust. (markt)

  Jasper

    Fix: 65959: Serialize Function as String[] rather Class[]. (remm)

  Web applications

    Fix: 65952: Align --add-opens configuration for jsvc with the current
    Tomcat scripts. (markt)
    Fix: Correct the AJP and HTTP/1.1 Connector configuration pages in the
    documentation web application to show which attributes are applicable to
    all Connectors and which are implementation specific. (markt)

  Other

    Fix: Correct a spelling mistake in the German translations. Thanks to
    Thomas Hoffmann. (markt)
    Fix: 65951: Use the tomcat.output property for OSGi bundle manifest
    paths. (isapir)
    Update: Update to Commons Daemon 1.3.0. (markt)
    Update: Update to Checkstyle 10.0. (markt)
    Update: Update to SpotBugs 4.6.0. (markt)
    Add: Expand the spotbugs Ant task to also cover test code. (markt)
    Update: Update to bnd 6.2.0. (markt)
    Update: Remove OSGi annotations dependency as it is no longer required
    with bnd 6.2.0. (markt)
    Code: Refactor the resource files for the Apache Tomcat installer for
    Windows so that all the resource files are located in a single directory
    in the source tree. (markt)
    Update: Update the packaged version of the Tomcat Native Library to
    1.2.32 to pick up Windows binaries built with OpenSSL 1.1.1n.(markt)
    Add: Improvements to Chinese translations contributed by 15625988003.
    (markt)
    Add: Improvements to French translations. (remm)
    Add: Improvements to Japanese translations contributed by tak7iji.
    (markt)
    Add: Expand coverage of translations for jakarta.el package. Based on
    #488 from Volodymyr Siedlecki. (markt)

2022-03-14 Tomcat 9.0.60 (remm)
  Catalina

    Fix: 65921: The type substitution flag for the rewrite valve should
    set the content type for the response, not the request. (markt)
    Fix: #479: Enable the rewrite valve to redirect requests when the
    original request cannot be mapped to a context. This typically happens
    when no ROOT context is defined. Pull request by elkman. (markt)
    Fix: 65940: Fix NullPointerException if an exception occurs during the
    destruction of a Servlet. (markt)

  Coyote

    Fix: Fix regression introduced with 65757 bugfix which better
    identified non request threads but which introduced a similar problem when
    user code was doing sequential operations in a single thread. Test case
    code submitted by Istvan Szekely. (remm)
    Fix: Fix potential thread-safety issue that could cause HTTP/1.1
    request processing to wait, and potentially timeout, waiting for
    additional data when the full request has been received. (markt)
    Fix: Throw IOException rather than IllegalStateException when the
    application attempts to write to an HTTP/2 stream after the client has
    closed the stream. (markt)

  Jasper

    Fix: When resolving methods in EL expressions that use beans and/or
    static fields, ensure that any custom type conversion is considered when
    identifying the method to call. (markt)

  Web applications

    Fix: Correct the name of the value attribute in the new documentation
    of OpenSSLConfCmd elements. (rjung)

2022-02-28 Tomcat 9.0.59 (remm)
  Catalina

    Add: Add ha-api-*.jar and jaxws-rt-*.jar to the list of JARs to skip
    when scanning for TLDs, web fragments and annotations. (michaelo)
    Add: Expand the default mappings used by ServletResponse.setLocale()
    to include a mapping from the ja locale to the Shift_JIS encoding. (markt)
    Fix: 65806: Improve the handling of session ID generation when the
    default algorithm for SecureRandom (SHA1PRNG) is not supported by the
    configured providers as will be the case for a FIPS compliant
    configuration. (markt)
    Fix: #464: Fall back to the class loader used to load JULI when the
    thread context class loader is not set. In a normal Tomcat configuration,
    this will be the system class loader. Based on a pull request by
    jackshirazi. (markt)
    Fix: #469: Include the Java Annotations API in the classes that Tomcat
    will not load from web applications. Pull request provided by ppkarwasz.
    (markt)
    Add: #472: Add support for additional user attributes to
    TomcatPrincipal and GenericPrincipal. Patch provided by Carsten Klein.
    (michaelo)
    Fix: Fix a potential StringIndexOutOfBoundsException exception when
    generating a WebDAV multi-status response after an error during a copy or
    delete. Report the paths relative to the server root for any resources
    with an error. (markt)
    Fix: Improve the format of WebDAV XML responses to make them easier
    for humans to read. The change ensures that there is always a line break
    before starting a new element. (markt)
    Fix: Improve validation of the Destination header for WebDAV MOVE and
    COPY requests. (markt)

  Coyote

    Fix: Correct a regression in the fix for 65454 that meant that
    minSpareThreads and maxThreads settings were ignored when the Connector
    used an internal executor. (markt)
    Fix: 65776: Improve the detection of the Linux duplicate accept bug
    and reduce (hopefully avoid) instances of false positives. (markt)
    Fix: 65848: Revert the change that attempted to align the behaviour of
    client certificate authentication with NIO or NIO2 with OpenSSL for TLS
    between MacOS and Linux/Windows as the root cause was traced to
    configuration differences. (markt)
    Fix: #467: When system time moves backwards (e.g. after clock
    correction), ensure that the cached formatted current date used for HTTP
    headers tracks this change. Pull request provided by zhenguoli. (markt)

  Jasper

    Fix: #474: Prevent a tag file from corrupting the ELContext of the
    calling page. Pull request provided by Dmitri Blinov. (markt)
    Fix: Minor optimisation of serialization for FunctionMapperImpl in
    response to pull request #476. (markt)

  Web applications

    Fix: Remove the applet example from the example web application as
    applets are no longer supported in any major browser. (markt)
    Code: Refactor a small number of pages in the examples web application
    to avoid an issue with reproducible builds due to differences in file
    ordering across different operating systems with Ant's zip task. (markt)
    Fix: Better documentation for the protocol attribute of the JNDIRealm.
    (markt)
    Fix: Clarify the settings described in the documentation web
    application to configure a cluster using static membership. (markt)
    Add: Add information on the OpenSSLConf and OpenSSLConfCmd elements to
    the HTTP SSL configuration page in the documentation web applications.
    (markt)

  jdbc-pool

    Code: Use LF line endings for text files in JARs to support
    reproducible builds across different operating systems. (markt)

  Other

    Code: Switch to building with Java 11 and using --release to target
    Java 8. Once back-ported to all currently supported branches, this will
    reduce the number of Java versions developers need to juggle. (markt)
    Code: Use LF line endings for text files in JARs to support
    reproducible builds across different operating systems. (markt)
    Fix: Fix dependencies for individual test targets in Ant build file.
    Based on #468 provided by Totoo chenyonghui. (markt)
    Update: Update the OWB module to Apache OpenWebBeans 2.0.26. (remm)
    Fix: Revert the cherry-pick of JavaDoc fix from DBCP applied in 9.0.57
    that broke the DataSourceMXBean by using a type that isn't supported by
    MXBeans. (markt)

2022-01-20 Tomcat 9.0.58 (remm)
  Coyote

    Fix: Correct a regression in the fix for 65785 that broke HTTP/2
    server push. (markt)

not released Tomcat 9.0.57 (remm)
  Catalina

    Fix: Add additional locking to DataSourceUserDatabase to provide
    improved protection for concurrent modifications. (markt)
    Fix: Add recycling check in the input and output stream isReady to try
    to give a more informative ISE when the facade has been recycled. (remm)
    Update: Remove the deprecated JmxRemoteLifecycleListener. (markt)
    Fix: Make the calculation of the session storage location more robust
    when using file based persistent storage. (markt)

  Coyote

    Fix: 65726: Implement support for HTTP/1.1 upgrade when the request
    includes a body. The maximum permitted size of the body is controlled by
    maxSavePostSize. (markt)
    Fix: Restore pre-starting of minSpareThreads lost in the fix for
    65454. (markt)
    Fix: Revert the previous fix for 65714 and implement a more
    comprehensive fix. (markt)
    Fix: 65757: Missing initial IO listener notification on Servlet
    container dispatch to another container thread. (remm)
    Fix: Expand the fix for 65757 so that rather than just checking if
    processing is happening on a container thread, the check is now if
    processing is happening on the container thread currently allocated to
    this request/response. (markt)
    Fix: Improve the fix for RST frame ordering added in 9.0.56 to avoid a
    potential deadlock on some systems in non-default configurations. (markt)
    Add: 65767: Add support for certificates that use keys encrypted using
    PBES2. Based on a pull request provided by xiezhaokun. (markt)
    Code: Refactor testing whether a String is a valid HTTP token. (markt)
    Fix: 65785: Perform additional validation of HTTP headers when using
    HTTP/2. (markt)
    Fix: When a Connector or Endpoint is paused, ensure that only new
    connections and new requests on existing connections are stopped while
    allowing in progress requests to run to completion. (markt)
    Fix: Explicitly release ByteBuffer instances associated with pooled
    channels when stopping the NioEndpoint and Nio2Endpoint. (markt)
    Fix: Narrow the scope of the logging of invalid cookie headers to just
    the invalid cookie rather than the whole cookie header. (markt)

  Jasper

    Fix: 65724: Fix missing messages for some
    PropertyNotWritableExceptions caused by a typo in the name used for a
    resource string. (markt)
    Add: Add support for specifying Java 18 (with the value 18) as the
    compiler source and/or compiler target for JSP compilation. If used with
    an Eclipse JDT compiler version that does not support these values, a
    warning will be logged and the default will used. (markt)

  WebSocket

    Add: Add support for POJO WebSocket endpoints to the programmatic
    upgrade that allows applications to opt to upgrade an HTTP connection to
    WebSocket. (markt)
    Fix: 65763: Improve handling of WebSocket connection close if a
    message write times out before the message is fully written. (markt)

  Other

    Update: Update the OWB module to Apache OpenWebBeans 2.0.25. (remm)
    Update: Update the CXF module to Apache CXF 3.5.0. (remm)
    Add: Improvements to Chinese translations contributed by zhnnn.
    (markt)
    Add: Improvements to French translations. (remm)
    Add: Improvements to Japanese translations contributed by Shirayuking,
    yoshy and tak7iji. (markt)
    Add: Improvements to Korean translations. (woonsan)
    Update: Update SpotBugs to 4.5.2. (markt)
    Update: Update the NSIS installer to 3.08. (markt)
    Update: Update UnboundID to 6.0.3. (markt)
    Update: Update CheckStyle to 9.2.1. (markt)
    Update: Update BND to 6.1.0. (markt)
    Update: Update OSGI annotations to 1.1.1. (markt)

2021-12-02 Tomcat 9.0.56 (remm)
  Catalina

    Fix: Make SPNEGO authentication more robust for the case where the
    provided credential has expired. (markt)
    Fix: 65684: Fix a potential NullPointerException when using JULI.
    (markt)
    Docs: Document conditions under which the AprLifecycleListener can be
    used to avoid JVM crashes. (michaelo)
    Fix: Refactor the AsyncFileHandler to reduce the possibility of log
    messages being lost on shutdown. (markt)
    Update: Refactor the AsyncFileHandler to remove the need for the
    org.apache.juli.AsyncLoggerPollInterval. If set, this property now has no
    effect. (markt)
    Add: Add debug logging to the RestCsrfPreventionFilter. Based on pull
    request #452 by Polina Georgieva. (markt)
    Add: 65710: Implement a workaround for a JVM bug that can trigger a
    file descriptor leak when using multi-part upload and the application does
    not explicitly close an input stream for an uploaded file that was cached
    on disk. (markt)

  Coyote

    Fix: Improve error handling if APR/Native fails to attach TLS
    capabilities to a TLS enabled client connection. (markt)
    Fix: Improve error handling if APR/Native fails to accept an incoming
    connection. (markt)
    Add: Provide protection against a known OS bug that causes the
    acceptor to report an incoming connection more than once. (markt)
    Fix: Avoid unnecessary duplicate read registrations for blocking I/O
    with the NIO connector. (markt)
    Fix: 65677: Improve exception handling for errors during HTTP/1.1
    reads with NIO2. (markt)
    Fix: Refactor APR/native connector shutdown to remove a potential
    source of JVM crashes on shutdown when sendfile is used. (markt)
    Fix: When an error occurs that triggers a stream reset, ensure that
    the first RST frame sent to the client is the one associated with the
    error that triggered the reset. (markt)
    Fix: 65714: Fix exceptions when the security manager is enabled and
    the first request received after starting is an HTTP request to a TLS
    enabled NIO2 connector. (markt)
    Add: Ensure that using NIO or NIO2 with OpenSSL for TLS behaves the
    same way on MacOS as it does on Linux and Windows when no trusted
    certificate authorities are configured and reject all client certificates.
    (markt)
    Fix: Avoid a potential deadlock during the concurrent processing of
    incoming HTTP/2 frames for a stream and that stream being reset. (markt)

  Other

    Fix: Switch from Cobertura to JaCoCo for code coverage as Cobertura
    does not support code coverage for code compiled for Java 11 onwards. It
    also removes the need to use a single thread to run the tests. (markt)

2021-11-10 Tomcat 9.0.55 (remm)
  Catalina

    Fix: Improve robustness of JNDIRealm for exceptions occurring when
    getting the connection. Also add missing close when running into issues
    getting the passord of a user. (remm)
    Docs: Add Javadoc comment which listeners must be nested whithin
    Server elements only. (michaelo)
    Add: Add support for custom caching strategies for web application
    resources. This initial implementation allows control over whether or not
    a resource is cached. (markt)
    Update: Log warning if a listener is not nested inside a Server
    element although it must have been. (michaelo)

  Coyote

    Code: Improve performance of Connector shutdown - primarily to reduce
    the time it takes to run the test suite. (markt)
    Fix: Refactor the APR/native connector shutdown to reduce the
    possibility of a JVM crash during the connector shutdown. (markt)
    Add: #457: Add a toString() method to MimeHeader to aid debugging.
    (dblevins)
    Add: Add experimental OpenSSL support through the Panama API
    incubating in Java 17, with support for OpenSSL 1.1+. This no longer
    requires tomcat-native or APR. Please refer to the openssl-java17 module
    from the main branch for more details. (remm)
    Fix: Fix APR connector stop so it correctly waits for the sendfile
    thread, if any, to exit. (markt)
    Fix: Do not ignore the error condition if the APR connector is not
    able to open a server socket as continuing in this case will trigger a JVM
    crash. (markt)
    Fix: Fix a potential JVM crash when using the APR/Native connector
    with TLS. A crash could occur if the connector was stopped whilst a
    connection was performing a TLS handshake. (markt)

  Jasper

    Update: Regenerate the EL parser using JavaCC 7.0.10. (markt)
    Fix: Fix a bug that prevented the EL parser correctly parsing a
    literal Map that used variables rather than literals for both keys and
    values. (markt)

  WebSocket

    Update: Add a new method WsServerContainer.upgradeHttpToWebSocket() to
    align with the new method that will be available from WebSocket 2.1
    onwards. (markt)

  Tribes

    Fix: #454: Differentiate warning messages in
    KubernetesMembershipProvider so that the missing attribute is clear
    to the user. PR provided by Hal Deadman. (markt)

2021-10-01 Tomcat 9.0.54 (remm)
  Catalina

    Fix: Provide the DataSource in the constructor of
    DataSourceUserDatabase, since it is always global. (remm)
    Fix: Fix delete then create object manipulations with
    DataSourceUserDatabase. (remm)
    Fix: 65553: Implement a work-around for a JRE bug that can trigger a
    memory leak when using the JNDI realm. (markt)
    Fix: 65586: Fix the bloom filter used to improve performance of
    archive file look ups in the web resources implementation so it works
    correctly for directory lookups whether or not the provided directory name
    includes the trailing /. (markt)
    Fix: #451: Improve the usefulness of the thread name cache used in
    JULI. Pull request provided by t-gergely. (markt)

  Coyote

    Fix: 65563: Correct parsing of HTTP Content-Range headers. Tomcat was
    incorrectly requiring an = character after bytes. Fix based on pull
    request #449 by Thierry Guérin. (markt)
    Fix: Correct a potential StackOverflowException with HTTP/2 and
    sendfile. (markt)
    Fix: Further improvements in the management of the connection flow
    control window. This addresses various bugs that caused streams to
    incorrectly report that they had timed out waiting for an allocation from
    the connection flow control window. (markt)
    Fix: 65577: Fix a AccessControlException reporting when running an
    NIO2 connector with TLS enabled. (markt)
    Update: Reclassify TLS ciphers that use AESCCM8 as medium security
    rather than high security to align with recent changes in OpenSSL. (markt)
    Fix: Fix an issue that caused some Servlet non-blocking API reads of
    the HTTP request body to incorrectly use blocking IO. (markt)

  Jasper

    Fix: Fix the implementation of MethodExpression.getMethodInfo() so
    that it returns the expected value rather than failing when the method
    expression is defined with the parameter values in the expression rather
    than the types being passed explicitly to
    ExpressionFactory.createMethodExpression(). (markt)

  WebSocket

    Fix: The internal upgrade handler should close the associated
    WebConnection on destroy. (remm)

  Web applications

    Fix: Clarify the JASPIC configuration options in the documentation web
    application. (markt)

  Other

    Fix: 65585: Update obsolete comments at the start of the
    build.properties.default file. (markt)

2021-09-10 Tomcat 9.0.53 (remm)
  Catalina

    Fix: Enable Tomcat to start if an (old) XML parser is configured that
    does not support allow-java-encodings. A warning will be logged if such an
    XML parser is detected. (markt)
    Fix: Change the behaviour of custom error pages. If an error occurs
    after the response is committed, once the custom error page content has
    been added to the response the connection is now closed immediately rather
    than closed cleanly. i.e. the last chunk that marks the end of the
    response body is no longer sent. This acts as an additional signal to the
    client that the request experienced an error. (markt)
    Fix: 65479: When handling requests using JASPIC authentication, ensure
    that PasswordValidationCallback.getResult() returns the result of the
    password validation rather than always returning false. Fixed via pull
    request #438 provided by Robert Rodewald. (markt)
    Code: Refactor the authenticators to delegate the check for preemptive
    authentication to the individual authenticators where an authentication
    scheme specific check can be performed. Based on pull request #444 by
    Robert Rodewald. (markt)
    Update: Improve the reusability of the UserDatabase by adding
    intermediate concrete implementation classes and allowing to do partial
    database updates on save. (remm)
    Add: Add a UserDatabase implementation as a superset of the
    DataSourceRealm functionality. (remm)
    Fix: Make sure the dynamic Principal returned by UserDatabaseRealm
    stays up to date with the database contents, and add an option to have it
    be static, similar to the other realms. (remm)
    Add: Add derby-*.jar to the list of JARs to skip when scanning for
    TLDs, web fragments and annotations. (markt)
    Fix: #447. Correct JPMS metadata for catalina.jar. Pull request
    provided by Hui Wang. (markt)

  Coyote

    Fix: Correct a logic error that meant setting certificateKeystoreFile
    to NONE did not have the expected effect. NONE was incorrectly treated as
    a file path. Patch provided by Mikael Sterner. (markt)
    Fix: 65505: When an HTTP header value is removed, ensure that the
    order of the remaining header values is unchanged. (markt)

  WebSocket

    Fix: 65506: Fix write timeout check that was using the read timeout
    value. Patch submitted by Gustavo Mahlow. (remm)

  Web applications

    Fix: Remove unnecessary Context settings from the examples web
    application. (markt)
    Fix: Document default value for unpackWARs and related clean-up. Pull
    request #439 provided by Robert Rodewald. (markt)
    Fix: Clarify the documentation of the compressionMinSize and
    compressibleMimeType HTTP Connector attributes. Pull request #442 provided
    by crisgeek. (markt)

  Other

    Fix: Fix failing build when building on non-English locales. Pull
    request #441 provided by Dachuan J. (markt)
    Update: Update to JSign version 4.0 to enable code signing without the
    need for the installation of additional client tools. (markt)
    Add: Update the internal fork of Apache Commons BCEL to 40d5eb4
    (2021-09-01, 6.6.0-SNAPSHOT). Code clean-up only. (markt)
    Add: Update the internal fork of Apache Commons Codec to fd44e6b
    (2021-09-01, 1.16-SNAPSHOT). Minor refactoring. (markt)
    Update: Add Apache Derby 10.14.2.0 to the testsuite dependencies, for
    JDBC and DataSource testing. (remm)
    Add: 65661: Update the internal fork of Apache Commons FileUpload to
    33d2d79 (2021-09-01, 2.0-SNAPSHOT). Refactoring and code clean-up. As a
    result of Commons File Upload now using java.nio.file.Files, applications
    using multi-part uploads need to ensure that the JVM is configured with
    sufficient direct memory to store all in progress multi-part uploads.
    (markt)
    Add: Update the internal fork of Apache Commons Pool to 2.11.1
    (2021-08-17). Improvements, code clean-up and refactoring. (markt)
    Add: Update the internal fork of Apache Commons DBCP to 2.9.0
    (2021-08-03). Improvements, code clean-up and refactoring. (markt)
    Update: Update the packaged version of the Tomcat Native Library to
    1.2.31 to pick up Windows binaries built with OpenSSL 1.1.1l.(markt)
    Update: Switch to the CDN as the primary download location for ASF
    dependencies. (markt)
    Add: Improvements to Chinese translations contributed by syseal,
    wolibo, ZhangJieWen and DigitalFatCat. (markt)
    Add: Improvements to Japanese translations contributed by tak7iji.
    (markt)
    Add: Improvements to Korean translations. (woonsan)

2021-08-06 Tomcat 9.0.52 (remm)
  Catalina

    Code: 65476: Correct an error in some code clean-up that mean that web
    application classes were not configured with the correct package. (markt)

not released Tomcat 9.0.51 (remm)
  Catalina

    Fix: 65411: Always close the connection when an uncaught
    NamingException occurs to avoid connection locking. Submitted by Ole
    Ostergaard. (remm)
    Fix: 65433: Correct a regression in the fix for 65397 where a
    StringIndexOutOfBoundsException could be triggered if the canonical path
    of the target of a symlink was shorter than the canonical path of the
    directory in which the symlink had been created. Patch provided by Cedomir
    Igaly. (markt)
    Add: 65443: Refactor the CorsFilter to make it easier to extend.
    (markt)
    Fix: To avoid unnecessary cache revalidation, do not add an HTTP
    Expires header when setting adding an HTTP header of CacheControl:
    private. (markt)

  Coyote

    Fix: When writing an HTTP/2 response via sendfile (only enabled when
    useAsyncIO is true) the connection flow control window was sometimes
    ignored leading to various error conditions. sendfile now checks both the
    stream and connection flow control windows before writing. (markt)
    Add: Add debug logging for writing an HTTP/2 response via sendfile.
    (markt)
    Fix: Correct bugs in the HTTP/2 connection flow control management
    that meant it was possible for a connection to stall waiting for a
    connection flow control window update that had already arrived. Any
    streams on that connection that were trying to write when this happened
    would time out. (markt)
    Fix: 65448: When using TLS with NIO, it was possible for a blocking
    response write to hang just before the final TLS packet associated with
    the response until the connection timed out at which point the final
    packet would be sent and the connection closed. (markt)
    Fix: 65454: Fix a race condition that could result in a delay to a new
    request. The new request could be queued to wait for an existing request
    to finish processing rather than the thread pool creating a new thread to
    process the new request. (markt)
    Fix: 65460: Correct a regression introduced in the previous release in
    the change to reduce the number of small HTTP/2 window updates sent for
    streams. A logic error meant that small window updates for the connection
    were dropped. This meant that the connection flow window slowly reduced
    over time until nothing could be sent. (markt)

  Web applications

    Fix: 65404: Correct a regression in the fix for 63362 that caused the
    server status page in the Manager web application to be truncated if HTTP
    upgrade was used such as when starting a WebSocket connection. (markt)

  Other

    Add: Improvements to Chinese translations contributed by ZhangJieWen
    and chengzheyan. (markt)
    Add: Improvements to French translations. (remm)
    Add: Improvements to Japanese translations contributed by tak7iji.
    (markt)
    Add: Improvements to Korean translations. (woonsan)
    Fix: Use of GraalVM native images no longer automatically disables JMX
    support. JMX support may still be disabled by calling
    org.apache.tomcat.util.modeler.Registry.disableRegistry(). (markt)

2021-07-02 Tomcat 9.0.50 (remm)
  Jasper

    Fix: Jakarta to Javax backport issue in tests. (remm)

not released Tomcat 9.0.49 (remm)
  Catalina

    Code: Refactor the RemoteIpValve to use the common utility method for
    list to comma separated string conversion. (markt)
    Code: Refactor JNDIRealm$JNDIConnection so its fields are accessible
    to sub-classes of JNDIRealm. (markt)
    Fix: Fix serialization warnings in UserDatabasePrincipal reported by
    SpotBugs. (markt)
    Fix: 65397: Calls to ServletContext.getResourcePaths() no longer
    include symbolic links in the results unless allowLinking has been set to
    true. If a resource is skipped because of this change, a warning will be
    logged as this typically indicates a configuration issue. (markt)

  Coyote

    Fix: 65368: Improve handling of clean closes of inbound TLS
    connections. Treat them the same way as clean closes of non-TLS
    connections rather than as unknown errors. (markt)
    Fix: Modify the HTTP/2 connector not to sent small updates for stream
    flow control windows to the user agent as, depending on how the user agent
    is written, this may trigger small writes from the user agent that in turn
    trigger the overhead protection. Small updates for stream flow control
    windows are now combined with subsequent flow control window updates for
    that stream to ensure that all stream flow control window updates sent
    from Tomcat are larger than overheadWindowUpdateThreshold. (markt)
    Add: Add additional debug logging to track the current state of the
    HTTP/2 overhead count that Tomcat uses to detect and close potentially
    malicious connections. (markt)
    Update: Many HTTP/2 requests from browsers will trigger one overhead
    frame and one non-overhead frame. Change the overhead calculation so that
    a non-overhead frame reduces the current overhead count by 2 rather than
    1. This means that, over time, the overhead count for a well-behaved
    connection will trend downwards. (markt)
    Update: Change the initial HTTP/2 overhead count from -10 to -10 *
    overheadCountFactor. This means that, regardless of the value chosen for
    overheadCountFactor, when a connection opens 10 overhead frames in a row
    will be required to trigger the overhead protection. (markt)
    Update: Increase the default overheadCountFactor from 1 to 10 and
    change the reduction in overhead count for a non-overhead frame from -2 to
    -20. This allows for a larger range (0-20) to be used for
    overheadCountFactor providing for finer-grained control. (markt)
    Fix: Modify the parsing of HTTP header values that use the 1#token to
    ignore empty elements as per RFC 7230 section 7 instead of treating the
    presence of empty elements as an error. (markt)
    Fix: Expand the unit tests for HttpServlet.doHead() and correct the
    flushing of the response buffer. The buffer used to behave as if it was
    one byte smaller than the configured size. The buffer was flushed (and the
    response committed if required) when the buffer was full. The buffer is
    now flushed (and the response committed if required) if the buffer is full
    and there is more data to write. (markt)
    Fix: Fix an issue where concurrent HTTP/2 writes (or concurrent reads)
    to the same connection could hang and eventually timeout when async IO was
    enabled (it is enabled by default). (markt)

  Jasper

    Fix: 65390: Correct a regression in the fix for 65124 and restore code
    that was removed in error leading to JSP compilation failures in some
    circumstances. (markt)
    Update: Update to the Eclipse JDT compiler 4.20. (markt)
    Add: Add support for specifying Java 17 (with the value 17) as the
    compiler source and/or compiler target for JSP compilation. If used with
    an Eclipse JDT compiler version that does not support these values, a
    warning will be logged and the latest supported version will used. (markt)
    Fix: 65377: Update the Java code generation for JSPs not to use the
    boxed primitive constructors as they have been deprecated in Java 9 and
    marked for future removal in Java 16. valueOf() is now used instead.
    (markt)

  WebSocket

    Code: Refactor the DigestAuthenticator to reuse a shared SecureRandom
    instance rather than create a new one to generate the cnonce if required.
    (markt)

  Web applications

    Fix: 65385: Correct the link in the documentation web application the
    Maven Central repository. (markt)

  Other

    Update: Update the OWB module to Apache OpenWebBeans 2.0.23. (remm)
    Update: Update the CXF module to Apache CXF 3.4.4. (remm)
    Fix: 65369 / #422: Add the additional --add-opens=... options required
    for running Tomcat on Java 16 onwards to the service.bat script to align
    it with the other start-up scripts. PR provided by MCMicS. (markt)
    Update: Update JUnit to version 4.13.2. (markt)
    Update: Update EasyMock to 4.3. (markt)
    Update: Update Objenesis to 3.2. (markt)
    Update: Update UnboundID to 6.0.0. (markt)
    Update: Update CheckStyle to 8.43. (markt)
    Update: Update SpotBugs to 4.2.3. (markt)
    Update: Update OSGi annotations to 1.1.0. (markt)

2021-06-15 Tomcat 9.0.48 (remm)
  Coyote

    Fix: Regression when generating reflection due to removed NIO classes
    in 9.0.47. (remm)

  Other

    Add: Use JSign to integrate the build script with the code signing
    service to enable release builds to be created on Linux as well as
    Windows. (markt)

not released Tomcat 9.0.47 (remm)
  Catalina

    Fix: 65301: RemoteIpValve will now avoid getting the local host name
    when it is not needed. (remm)
    Fix: 65308: NPE in JNDIRealm when no userRoleAttribute is given.
    (fschumacher)
    Add: #412: Add commented out, sample users for the Tomcat Manager app
    to the default tomcat-users.xml file. Based on a PR by Arnaud Dagnelies.
    (markt)
    Add: #418: Add a new option, pass-through, to the default servlet's
    useBomIfPresent initialization parameter that causes the default servlet
    to leave any BOM in place when processing a static file and not to use the
    BOM to determine the encoding of the file. Based on a pull request by
    Jean-Louis Monteiro. (markt)
    Update: Add cookieName attribute to the SSO valve to configure the SSO
    cookie name. (remm)
    Fix: #419: When processing POST requests of type multipart/form-data
    for parts without a filename that are added to the parameter map in String
    form, check the size of the part before attempting conversion to String.
    Pull request provided by tianshuang. (markt)
    Fix: 62912: Don't mutate an application provided content header if it
    does not contain a charset. Also remove the outdated workaround for the
    buggy Adobe Reader 9 plug-in for IE. (markt)
    Fix: AprLifecycleListener does not show dev version suffix for
    libtcnative and libapr. (michaelo)
    Update: Refactor principal handling in UserDatabaseRealm using an
    inner class that extends GenericPrincipal. (remm)
    Fix: Enable the default doHead() implementation in HttpServlet to
    correctly handle responses where the content length needs to be
    represented as a long since it is larger than the maximum value that can
    be represented by an int. (markt)
    Fix: Avoid synchronization on roles verification for the memory
    UserDatabase. (remm)
    Fix: Fix the default doHead() implementation in HttpServlet to
    correctly handle responses where the Servlet calls ServletResponse.reset()
    and/or ServletResponse.resetBuffer(). (markt)
    Fix: Fix the default doHead() implementation in HttpServlet to
    correctly handle responses generated using the Servlet non-blocking API.
    (markt)

  Coyote

    Add: 64943: Add support for Unix Domain Sockets to
    org.apache.coyote.http11.Http11AprProtocol. Depends on tomcat-native
    1.2.26 and up. (minfrin)
    Fix: 65303: Fix a possible NullPointerException if an error occurs on
    an HTTP/1.1 connection being upgraded to HTTP/2 or on a pushed HTTP/2
    stream. (markt)
    Fix: 65311: Fix a race condition in the NioBlockingSelector that could
    cause a delay to select operations. (markt)
    Update: Simplify AprEndpoint socket bind for all platforms. (michaelo)
    Update: Add back simplification of NIO block read and write, now
    better validated in Tomcat 10. (remm)
    Fix: Optimize NIO selector handling for Java 11. (remm)
    Fix: 65340: Add missing check for a negative return value for
    Hpack.decodeInteger in the HpackDecoder, which could cause a
    NegativeArraySizeException exception. Submitted by Thomas, and verified
    the fix is present in the donated hpack code in a further update. (remm)
    Add: Add debug logging for HTTP/2 HPACK header decoding. (markt)
    Fix: Correct parsing of HTTP headers consisting of a list of tokens so
    that a header with an empty token is treated consistently regardless of
    whether the empty token is at the start, middle or end of the list of
    tokens. (markt)
    Fix: Remove support for the identity transfer encoding. The inclusion
    of this encoding in RFC 2616 was an error that was corrected in 2001.
    Requests using this transfer encoding will now receive a 501 response.
    (markt)
    Fix: Process transfer encoding headers from both HTTP 1.0 and HTTP 1.1
    clients. (markt)
    Fix: Ensure that if the transfer encoding header contains the chunked,
    that the chunked encoding is the final encoding listed. (markt)

  Jasper

    Code: Review code used to generate Java source from JSPs and tags and
    remove code found to be unnecessary. (markt)
    Code: Refactor use of internal ChildInfo class to use compile time
    type checking rather than run time type checking. (markt)
    Fix: 65358: Improve expression language method matching for methods
    with varargs. Where multiple methods may match the provided parameters,
    the method that requires the fewest varargs is preferred. (markt)
    Add: 65332: Add a commented out section in catalina.policy that
    provides the necessary permissions to compile JSPs with javac when running
    on Java 9 onwards with a security manager. It is commented out as it will
    cause errors if used with earlier Java versions. (markt)

  WebSocket

    Fix: 65317: When using permessage-deflate, the WebSocket connection
    was incorrectly closed if the uncompressed payload size was an exact
    multiple of 8192. Based on a patch provided by Saksham Verma. (markt)
    Fix: 65342: Correct a regression introduced with the fix for 65262
    that meant Tomcat's WebSocket implementation would only work with Tomcat's
    implementation of the Java EE WebSocket API. (markt)

  Web applications

    Fix: Improve the description of the maxConnections and acceptCount
    attributes in the Connector section of the documentation web application.
    (markt)

  Other

    Add: Improvements to French translations. (remm)
    Add: Improvements to Korean translations. (woonsan)
    Fix: 65362: Correct a regression in the previous release. The change
    to create OSGi Require-Capability sections in manifests for Jakarta API
    JARs manually rather than with bnd annotations did not add the necessary
    manual entries to the embedded JARs. (markt)
    Update: Update the packaged version of the Tomcat Native Library to
    1.2.30. Also update the minimum recommended version to 1.2.30. (markt)

2021-05-12 Tomcat 9.0.46 (markt)
  Catalina

    Fix: Allow APR connector creation using the listener with the flag and
    the default HTTP/1.1 protocol. (rjung/remm)
    Code: Expand coverage of unit tests for JNDIRealm using the UnboundID
    LDAP SDK for Java. (markt)
    Fix: 65224: Ensure the correct escaping of attribute values and search
    filters in the JNDIRealm. (markt)
    Fix: 65235: Add missing attributes to the MBean descriptor file for
    the RemoteIpValve. (markt)
    Fix: 65244: HandlesTypes should include classes that use the specified
    annotation types on fields or methods. (remm)
    Fix: 65251: Correct a regression introduced in 9.0.44 that meant that
    the auto-deployment process may attempt a second, concurrent deployment of
    a web application that is being deployed by the Manager resulting in one
    of the deployments failing and errors being reported. (markt)
    Fix: Improve the SSLValve so it is able to handle escaped client
    certificate headers from Nginx. Based on a patch by Florent Guillaume.
    (markt)

  Coyote

    Fix: Ensure that all HTTP requests that contain an invalid character
    in the protocol component of the request line are rejected with a 400
    response rather than some requests being rejected with a 505 response.
    (markt)
    Fix: When generating the error message for an HTTP request with an
    invalid request line, ensure that all the available data is included in
    the error message. (markt)
    Fix: 65272: Restore the optional HTTP feature that allows LF to be
    treated as a line terminator for the request line and/or HTTP headers
    lines as well as the standard CRLF. This behaviour was previously removed
    as a side-effect of the fix for CVE-2020-1935. (markt)

  Jasper

    Code: Review code used to generate Java source from JSPs and tags and
    remove code found to be unnecessary. (markt)
    Update: <servlet> entries in web.xml that include a <jsp-file> element
    and a negative <load-no-startup> element that is not the default value of
    -1 will no longer be loaded at start-up. This makes it possible to define
    a <jsp-file> that will not be loaded at start-up. (markt)
    Fix: Allow the JSP configuration option useInstanceManagerForTags to
    be used with Tags that are implemented as inner classes. (markt)

  WebSocket

    Code: Refactor the way Tomcat passes path parameters to POJO end
    points to simplify the code. (markt)
    Fix: 65262: Refactor the creation of WebSocket end point, decoder and
    encoder instances to be more IoC friendly. Instances are now created via
    the InstanceManager where possible. (markt)

  Web applications

    Fix: 65235: Correct name of changeLocalName in the documentation for
    the RemoteIpValve. (markt)
    Fix: 65265: Avoid getting the boot classpath when it is not available
    in the Manager diagnostics. (remm)

  Other

    Fix: Create OSGi Require-Capability sections in manifests for Jakarta
    API JARs manually rather than via the
    aQute.bnd.annotation.spi.ServiceConsumer annotation as this triggers TCK
    failures for downstream consumers of the API JARs. (markt)
    Update: Update the packaged version of the Tomcat Native Library to
    1.2.28. (markt)
    Update: Update the OWB module to Apache OpenWebBeans 2.0.22. (remm)
    Update: Update the CXF module to Apache CXF 3.4.3. (remm)
    Fix: Move SystemPropertySource to be a regular class to allow more
    precise configuration if needed. The system property source will still
    always be enabled. (remm)
    Add: Improvements to Chinese translations. Provided by bytesgo. (mark)
    Add: Improvements to French translations. (remm)
    Add: Improvements to Korean translations. (woonsan)

2021-04-06 Tomcat 9.0.45 (markt)
  Catalina

    Fix: Avoid NPE when a JNDI reference cannot be resolved in favor of a
    NamingException. (remm)
    Fix: Avoid using reflection for setting properties on the webapp
    classloader. Based on a patch submitted by Romain Manni-Bucau. (remm)

  Coyote

    Fix: Improve consistency of OpenSSL error stack handling in the TLS
    engine, and log all errors found as debug. (remm)
    Fix: Ensure that HTTP/2 streams are only recycled once as multiple
    attempts to recycle an HTTP/2 stream may result in NullPointerExceptions.
    (markt)
    Code: Simplify the closing on an HTTP/2 stream when an error condition
    is present. (markt)
    Fix: 64771: Prevent concurrent calls to ServletInputStream.isReady()
    corrupting the input buffer. (markt)
    Fix: 65179: Ensure that the connection level flow control window from
    the client to the server is updated when handling DATA frames received
    for completed streams else the flow control window may become exhausted.
    (markt)
    Fix: 65203: Fix a regression introduced in 9.0.44 that meant that an
    error during an asynchronous read broke all future asynchronous reads
    associated with the same request instance. (markt)
    Fix: Disable keep-alive when inconsistent content delimitation is
    present in a request. (remm)

  Jasper

    Fix: Include the new org.apache.jasper.optimizations package in the
    list of OSGi exported packages for the Jasper embedded JAR.
    Patch provided by Sokratis Zappis. (markt)
    Add: Add a new option for the trimSpaces configuration. extended will
    attempt to remove leading and trailing whitespace from template text and
    collapse sequences of whitespace and newlines within template text into a
    single new line. Based on a pull request by kamnani. (markt)

  Other

    Add: Implement the first phase of reproducible builds. Sequential
    builds on the same machine now produce identical output provided that
    the Ant property ant.tstamp.now is set. The minimum required Ant
    version is now 1.9.10. (markt)
    Add: Improvements to Chinese translations. Provided by Ruan Wenjun.
    (mark)
    Add: Improvements to French translations. (remm)
    Add: Improvements to Japanese translations. Provided by kfujino and
    Shirayuking. (markt)
    Add: Improvements to Korean translations. (woonsan)
    Update: Update the packaged version of the Tomcat Native Library to
    1.2.27. (markt)

2021-03-10 Tomcat 9.0.44 (markt)
  Catalina

    Fix: Revert an incorrect fix for a potential resource leak that broke
    deployment via the Ant deploy task. (markt)
    Fix: Improve error message for failed ConfigurationSource lookups in
    the Catalina implementation. (remm)
    Fix: 64938: Align the behaviour when null is passed to the
    ServletResponse methods setCharacterEncoding(), setContentType() and
    setLocale() with the recent clarification from the Jakarta Servlet
    project of the expected behaviour in these cases. (markt)
    Fix: 65135: Rename Context method isParallelAnnotationScanning to
    getParallelAnnotationScanning for consistency and ease of use in JMX
    descriptors. (remm)
    Fix: Ensure that the AsyncListener.onError() event is triggered when a
    I/O error occurs during non-blocking I/O. There were some cases
    discovered where this was not happening. (markt)
    Add: Make the non-blocking I/O error handling more robust by handling
    the case where the application code swallows an IOException in
    WriteListener.onWritePossible() and ReadListener.onDataAvailable().
    (markt)
    Fix: Correct syntax error in output of JsonErrorReportValve. Pull
    request provided by Viraj Kanwade. (markt)
    Code: Make the StandardContext.postWorkDirectory() protected rather
    than private to help users wishing to customise the default work directory
    behaviour. (markt)

  Coyote

    Fix: 65118: Fix a potential NullPointerException when pruning closed
    HTTP/2 streams from the connection. (markt)
    Fix: Avoid NullPointerException when a secure channel is closed before
    the SSL engine was initialized. (remm)
    Fix: Ensure that the ReadListener's onError() event is triggered if
    the client closes the connection before sending the entire request body
    and the server is ready the request body using non-blocking I/O. (markt)
    Fix: 65137: Ensure that a response is not corrupted as well as
    incomplete if the connection is closed before the response is fully
    written due to a write timeout. (markt)
    Fix: Related to bug 65131, make sure all errors from OpenSSL are fully
    cleared, as there could be more than one error present after an operation
    (confirmed in the OpenSSL API documentation). (remm)
    Fix: Make handling of OpenSSL read errors more robust when plain text
    data is reported to be available to read. (markt)
    Fix: Correct handling of write errors during non-blocking I/O to
    ensure that the associated AsyncContext was closed down correctly. (markt)

  Web applications

    Fix: 65136: Remove the restriction that prevented the Manager web
    application deploying different web applications in parallel. This
    required some refactoring, most notably to HostConfig.check() and how it
    is used. (markt)

  Other

    Update: Update the OWB module to Apache OpenWebBeans 2.0.21. (remm)
    Update: Update the CXF module to Apache CXF 3.4.2. (remm)
    Add: Improvements to French translations. (remm)
    Add: Improvements to Korean translations. (woonsan)
    Add: Improvements to Brazilian Portuguese translations. Provided by
    Thiago. (mark)
    Add: Improvements to Russian translations. Provided by Azat. (mark)
    Add: Improvements to Chinese translations. Provided by shawn. (mark)
    Update: Update to bnd 5.3.0. (markt)

2021-02-02 Tomcat 9.0.43 (markt)
  Catalina

    Fix: 65106: Fix the ConfigFileLoader handling of file URIs when
    running under a security manager on some JREs. (markt)

  Coyote

    Fix: Ensure that SNI provided host names are matched to SSL virtual
    host configurations in a case insensitive manner. (markt)
    Fix: 65111: Free direct memory buffers in the APR connector. (remm)

not released Tomcat 9.0.42 (markt)
  Catalina

    Fix: 60781: Escape elements in the access log that need to be escaped
    for the access log to be parsed unambiguously. (fschumacher/markt)
    Add: 64110: Add support for additional TLS related request attributes
    that provide details of the protocols and ciphers requested by a client in
    the initial TLS handshake. (markt)
    Add: Let the RemoteCIDRValve inherit from RequestFilterValve and
    support all of its features. Especially add support for connector specific
    configuration using addConnectorPort. (rjung)
    Add: Add peerAddress to coyote request, which contains the IP address
    of the direct connection peer. If a reverse proxy sits in front of Tomcat
    and the protocol used is AJP or HTTP in combination with the
    RemoteIp(Valve|Filter), the peer address might differ from the
    remoteAddress. The latter then contains the address of the client in front
    of the reverse proxy, not the address of the proxy itself. Support for the
    peer address has been added to the RemoteAddrValve and RemoteCIDRValve
    with the new attribute usePeerAddress. This can be used to restrict access
    to Tomcat based on the reverse proxy IP address, which is especially
    useful to harden access to AJP connectors. The peer address can also be
    logged in the access log using the new %{peer}a syntax. (rjung)
    Fix: Avoid uncaught InaccessibleObjectException on Java 16 trying to
    clear references threads. (remm)
    Fix: 65033: Fix JNDI realm error handling when connecting to a failed
    server when pooling was not enabled. (remm)
    Fix: 65047: If the AccessLogValve is unable to open the access log
    file, include information on the current user in the associated log
    message (markt)

  Coyote

    Fix: Additional fix for 64830 to address an edge case that could
    trigger request corruption with h2c connections. (markt)
    Fix: 64974: Improve handling of pipelined HTTP requests in combination
    with the Servlet non-blocking IO API. It was possible that some requests
    could get dropped. (markt)
    Add: Add support for using Unix domain sockets for NIO when running on
    Java 16 or later. This uses NIO specific unixDomainSocketPath and
    unixDomainSocketPathPermissions attributes. Based on a PR submitted by
    Graham Leggett. (remm)
    Fix: 65001: Fix error handling for exceptions thrown from calls to
    ReadListener and WriteListener. (markt)
    Fix: Avoid possible infinite loop in OpenSSLEngine.unwrap when the
    destination buffers state is changed concurrently. (remm)

  Jasper

    Add: Add a new StringInterpreter interface that allows applications to
    provide customised string attribute value to type conversion within JSPs.
    This allows applications to provide a conversion implementation that is
    optimised for the application. (markt)
    Fix: 64965: JspContextWrapper.findAttribute should ignore expired
    sessions rather than throw an IllegalStateException. (remm)
    Update: Update to the Eclipse JDT compiler 4.18. (markt)

  Web applications

    Fix: 65007: Clarify that the commands shown in the TLS documentation
    for importing a signed TLS certificate from a certificate authority are
    typical examples that may need to be adjusted in some cases. (markt)

  Tribes

    Fix: Work around DNS caching for the DNS provider of the cloud
    membership. (jfclere)

  Other

    Add: Improvements to Chinese translations. Provided by leeyazhou and
    Yi Shen. (markt)
    Add: Improvements to French translations. (remm)
    Add: Improvements to Korean translations. (woonsan)
    Update: Update the packaged version of the Tomcat Native Library to
    1.2.26. (markt)
    Add: Update the internal fork of Apache Commons Pool to 2.9.1-SNAPSHOT
    (2021-01-15). (markt)
    Add: Update the internal fork of Apache Commons DBCP to 2.9.0-SNAPSHOT
    (2021-01-15). (markt)
    Update: Migrate to new code signing service. (markt)
    Code: Use java.nio.file.Path to test for one directory being a
    sub-directory of another in a consistent way. (markt)
    Update: Update to Commons Daemon 1.2.4. (markt)
    Add: Improvements to Brazilian Portuguese translations. Provided by
    Rual Zaninetti Rosa and Lucas. (markt)
    Add: Improvements to Russian translations. Provided by Polina and
    Azat. (markt)
    Update: Update the NSIS Installer used to build the Windows installer
    to version 3.06.1. (kkolinko)

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