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$NetBSD: patch-src_block_template.c,v 1.1 2017/03/07 23:17:51 sevan Exp $
CVE-2013-7459 backport
https://github.com/dlitz/pycrypto/commit/8dbe0dc3eea5c689d4f76b37b93fe216cf1f00d4
--- src/block_template.c.orig 2017-03-07 16:58:09.000000000 +0000
+++ src/block_template.c
@@ -170,6 +170,17 @@ ALGnew(PyObject *self, PyObject *args, P
"Key cannot be the null string");
return NULL;
}
+ if (IVlen != 0 && mode == MODE_ECB)
+ {
+ PyErr_Format(PyExc_ValueError, "ECB mode does not use IV");
+ return NULL;
+ }
+ if (IVlen != 0 && mode == MODE_CTR)
+ {
+ PyErr_Format(PyExc_ValueError,
+ "CTR mode needs counter parameter, not IV");
+ return NULL;
+ }
if (IVlen != BLOCK_SIZE && mode != MODE_ECB && mode != MODE_CTR)
{
PyErr_Format(PyExc_ValueError,
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