CVE-2011-1944

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-09-02 · updated 2026-06-16
Weakness: CWE-189

Description

Integer overflow in xpath.c in libxml2 2.6.x through 2.6.32 and 2.7.x through 2.7.8, and libxml 1.8.16 and earlier, allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted XML file that triggers a heap-based buffer overflow when adding a new namespace node, related to handling of XPath expressions.

Affected products

xmlsoft Libxml: through 1.8.16; 1.5.0, 1.6.0, 1.6.1, 1.6.2, 1.7.0, 1.7.1 (+19)
xmlsoft libxml2: 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.6.4, 2.6.5 (+26)

References

http://git.gnome.org/browse/libxml2/commit/?id=d7958b21e7f8c447a26bb2436f08402b2c308be4
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
http://lists.apple.com/archives/security-announce/2012/Sep/msg00003.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062238.html
http://lists.opensuse.org/opensuse-updates/2011-07/msg00035.html
http://rhn.redhat.com/errata/RHSA-2013-0217.html
http://scarybeastsecurity.blogspot.com/2011/05/libxml-vulnerability-and-interesting.html
http://secunia.com/advisories/44711
http://support.apple.com/kb/HT5281
http://support.apple.com/kb/HT5503
http://ubuntu.com/usn/usn-1153-1

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