From patchwork Fri Nov 30 11:29:28 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [1/1] Python: Fix for CVE-2012-2135 Date: Fri, 30 Nov 2012 11:29:28 -0000 From: yanjun.zhu X-Patchwork-Id: 39961 Message-Id: <1354274968-7181-1-git-send-email-yanjun.zhu@windriver.com> To: From: "yanjun.zhu" Reference:http://bugs.python.org/issue14579 The utf-16 decoder in Python 3.1 through 3.3 does not update the aligned_end variable after calling the unicode_decode_call_errorhandler function, which allows remote attackers to obtain sensitive information (process memory) or cause a denial of service (memory corruption and crash) via unspecified vectors. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-2135 [YOCTO #3450] Signed-off-by: yanjun.zhu --- .../python/python/python-2.7.2-CVE-2012-2135.patch | 24 ++++++++++++++++++++++ meta/recipes-devtools/python/python_2.7.2.bb | 1 + 2 files changed, 25 insertions(+) create mode 100644 meta/recipes-devtools/python/python/python-2.7.2-CVE-2012-2135.patch diff --git a/meta/recipes-devtools/python/python/python-2.7.2-CVE-2012-2135.patch b/meta/recipes-devtools/python/python/python-2.7.2-CVE-2012-2135.patch new file mode 100644 index 0000000..ad118b0 --- /dev/null +++ b/meta/recipes-devtools/python/python/python-2.7.2-CVE-2012-2135.patch @@ -0,0 +1,24 @@ +Upstream-Status: Backport + +Reference:http://bugs.python.org/issue14579 + +The utf-16 decoder in Python 3.1 through 3.3 does not update the +aligned_end variable after calling the unicode_decode_call_errorhandler +function, which allows remote attackers to obtain sensitive information +(process memory) or cause a denial of service (memory corruption and crash) +via unspecified vectors. + +http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-2135 +Signed-off-by: yanjun.zhu +diff -urpN a/Objects/unicodeobject.c b/Objects/unicodeobject.c +--- a/Objects/unicodeobject.c 2012-11-12 16:25:33.000000000 +0800 ++++ b/Objects/unicodeobject.c 2012-11-12 16:26:22.000000000 +0800 +@@ -2568,7 +2568,7 @@ PyUnicode_DecodeUTF16Stateful(const char + } + + /* UTF-16 code pair: */ +- if (q >= e) { ++ if (e - q < 2) { + errmsg = "unexpected end of data"; + startinpos = (((const char *)q)-2)-starts; + endinpos = ((const char *)e)-starts; diff --git a/meta/recipes-devtools/python/python_2.7.2.bb b/meta/recipes-devtools/python/python_2.7.2.bb index 2adb4e4..9dabfb7 100644 --- a/meta/recipes-devtools/python/python_2.7.2.bb +++ b/meta/recipes-devtools/python/python_2.7.2.bb @@ -24,6 +24,7 @@ SRC_URI += "\ file://setuptweaks.patch \ file://check-if-target-is-64b-not-host.patch \ file://search_db_h_in_inc_dirs_and_avoid_warning.patch \ + file://python-2.7.2-CVE-2012-2135.patch \ " S = "${WORKDIR}/Python-${PV}"