Buffer overflow in Libxml2 - CVE-2012-5134
Published: November 28, 2012 / Updated: July 28, 2020
Vulnerability identifier: #VU32739
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-5134
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
Heap-based buffer underflow in the xmlParseAttValueComplex function in parser.c in libxml2 2.9.0 and earlier, as used in Google Chrome before 23.0.1271.91 and other products, allows remote attackers to cause a denial of service or possibly execute arbitrary code via crafted entities in an XML document.
Affected software
Libxml2
Amazon Linux AMI
SUSE Linux
Slackware Linux
libxml2 (Alpine package)
Amazon Linux AMI
SUSE Linux
Slackware Linux
libxml2 (Alpine package)
How to mitigate CVE-2012-5134
Install update from vendor's website.
libxml2 (Alpine package) - update to 2.7.8-r5
External References
- http://git.gnome.org/browse/libxml2/commit/?id=6a36fbe3b3e001a8a840b5c1fdd81cefc9947f0d
- http://googlechromereleases.blogspot.com/2012/11/stable-channel-update.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/2012-12/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00002.html
- http://rhn.redhat.com/errata/RHSA-2012-1512.html
- http://rhn.redhat.com/errata/RHSA-2013-0217.html
- http://secunia.com/advisories/51448
- http://secunia.com/advisories/54886
- http://secunia.com/advisories/55568
- http://support.apple.com/kb/HT5934
- http://support.apple.com/kb/HT6001
- http://www.debian.org/security/2012/dsa-2580
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:056
- http://www.securityfocus.com/bid/56684
- http://www.securitytracker.com/id?1027815
- http://www.ubuntu.com/usn/USN-1656-1
- https://bugzilla.redhat.com/show_bug.cgi?id=880466
- https://code.google.com/p/chromium/issues/detail?id=158249
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80294