CVE-2012-5134

CVE-2012-5134 is a medium-severity vulnerability in Google Chrome with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.8)
• EPSS exploit prediction: 4% (90th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Google Chrome
• Published: 2012-11-28
• Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2012-5134?

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.

How severe is CVE-2012-5134?

CVE-2012-5134 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2012-5134 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-5134?

CVE-2012-5134 primarily affects Google Chrome. In total, 226 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-5134?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-5134 published?

CVE-2012-5134 was published on 2012-11-28 and last updated on 2026-06-16.

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

Affected products (226)

• cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.0:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.1:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.2:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.3:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.4:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.5:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.6:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.7:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.8:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.10:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.11:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.12:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.13:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.14:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.15:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.16:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.17:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.18:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.19:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.20:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.21:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.22:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.23:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.24:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.26:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.30:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.31:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.32:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.33:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.35:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.36:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.37:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.38:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.39:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.40:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.41:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.44:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.45:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:23.0.1271.46:*:*:*:*:*:*:*

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