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Python: Fix for CVE-2012-2135

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Reference:http://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]

(From OE-Core rev: 11544f573bc94ce69a8a76d645e46ab6359dee78)

Signed-off-by: yanjun.zhu <yanjun.zhu@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
yanjun.zhu
2012-11-30 19:23:48 +08:00
committed by Richard Purdie
parent 9abe92ec1c
commit 8cb8752662
2 changed files with 26 additions and 1 deletions
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24
meta/recipes-devtools/python/python/python-2.7.3-CVE-2012-2135.patch Normal file
View File

@@ -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 <yanjun.zhu@windriver.com>
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;

3
meta/recipes-devtools/python/python_2.7.3.bb
View File

@@ -1,6 +1,6 @@
require python.inc
DEPENDS = "python-native bzip2 db gdbm openssl readline sqlite3 zlib"
PR = "${INC_PR}.2"
PR = "${INC_PR}.3"
DISTRO_SRC_URI ?= "file://sitecustomize.py"
DISTRO_SRC_URI_linuxstdbase = ""
@@ -27,6 +27,7 @@ SRC_URI += "\
file://avoid_warning_for_sunos_specific_module.patch \
file://python-2.7.3-berkeley-db-5.3.patch \
file://python-2.7.3-remove-bsdb-rpath.patch \
file://python-2.7.3-CVE-2012-2135.patch \
"
S = "${WORKDIR}/Python-${PV}"