Resource management error in libxslt for Libxml2

1) Resource management error

EUVDB-ID: #VU33319

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-2870

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libxslt: 1.1.0 - 1.1.26

External links

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
http://chromiumcodereview.appspot.com/10823168
http://chromiumcodereview.appspot.com/10830177

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.