#VU33319 Resource management error in libxslt - CVE-2012-2870

Vulnerability identifier: #VU33319

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-2870

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libxslt
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

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

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

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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.