SB2012083102 - Resource management error in libxslt for Libxml2

Description

This security bulletin contains information about 1 security vulnerability.

1) Resource management error (CVE-ID: CVE-2012-2870)

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

libxslt 1.1.26 and earlier, as used in Google Chrome before 21.0.1180.89, does not properly manage memory, which might allow remote attackers to cause a denial of service (application crash) via a crafted XSLT expression that is not properly identified during XPath navigation, related to (1) the xsltCompileLocationPathPattern function in libxslt/pattern.c and (2) the xsltGenerateIdFunction function in libxslt/functions.c.

Remediation

Install update from vendor's website.

References

• http://code.google.com/p/chromium/issues/detail?id=138672
• http://code.google.com/p/chromium/issues/detail?id=140368
• http://googlechromereleases.blogspot.com/2012/08/stable-channel-update_30.html
• http://lists.apple.com/archives/security-announce/2013/Oct/msg00009.html
• http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00030.html
• http://secunia.com/advisories/50838
• http://secunia.com/advisories/54886
• http://src.chromium.org/viewvc/chrome/trunk/src/third_party/libxslt/libxslt/functions.c?r1=75684&r2=149998
• http://src.chromium.org/viewvc/chrome/trunk/src/third_party/libxslt/libxslt/functions.c?view=log
• http://src.chromium.org/viewvc/chrome/trunk/src/third_party/libxslt/libxslt/pattern.c?r1=118654&r2=150123
• http://src.chromium.org/viewvc/chrome/trunk/src/third_party/libxslt/libxslt/pattern.c?view=log
• http://support.apple.com/kb/HT5934
• http://support.apple.com/kb/HT6001
• http://www.debian.org/security/2012/dsa-2555
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:164
• https://chromiumcodereview.appspot.com/10823168
• https://chromiumcodereview.appspot.com/10830177