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Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC IV attack countermeasure.

This commit is contained in:
Antoine Pitrou 2012-01-27 09:50:45 +01:00
parent 722db7bdba f2bf8a6ac5
commit 3f366314e8
2 changed files with 7 additions and 2 deletions
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3
Misc/NEWS
View File

@ -111,6 +111,9 @@ Core and Builtins
Library
-------
- Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC
IV attack countermeasure.
- Issue #13772: In os.symlink() under Windows, do not try to guess the link
target's type (file or directory). The detection was buggy and made the
call non-atomic (therefore prone to race conditions).

6
Modules/_ssl.c
View File

@ -1481,7 +1481,8 @@ context_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
self->ctx = ctx;
/* Defaults */
SSL_CTX_set_verify(self->ctx, SSL_VERIFY_NONE, NULL);
SSL_CTX_set_options(self->ctx, SSL_OP_ALL);
SSL_CTX_set_options(self->ctx,
SSL_OP_ALL & ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
#define SID_CTX "Python"
SSL_CTX_set_session_id_context(self->ctx, (const unsigned char *) SID_CTX,
@ -2143,7 +2144,8 @@ PyInit__ssl(void)
PY_SSL_VERSION_TLS1);
/* protocol options */
PyModule_AddIntConstant(m, "OP_ALL", SSL_OP_ALL);
PyModule_AddIntConstant(m, "OP_ALL",
SSL_OP_ALL & ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
PyModule_AddIntConstant(m, "OP_NO_SSLv2", SSL_OP_NO_SSLv2);
PyModule_AddIntConstant(m, "OP_NO_SSLv3", SSL_OP_NO_SSLv3);
PyModule_AddIntConstant(m, "OP_NO_TLSv1", SSL_OP_NO_TLSv1);