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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libxml2 | 2.8.0+dfsg1-7 | — |
| Debian 13 | libxml2 | 2.8.0+dfsg1-7 | — |
| Debian 12 | libxml2 | 2.8.0+dfsg1-7 | — |
| Debian 6.0 | libxml2 | 2.7.8.dfsg-2+squeeze6 | DSA-2580-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | libxml2 +3 | 2.7.6-8.el6_3.4 | RHSA-2012:1512 |
| RHEL 6 | mingw32-libxml2 +1 | 2.7.6-6.el6_3 | RHSA-2013:0217 |
| RHEL 5 | libxml2 +2 | 2.6.26-2.1.15.el5_8.6 | RHSA-2012:1512 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | chromium | 55.0.2883.75-3.1 | openSUSE-SU-2024:12948-1, openSUSE-SU-2024:10171-1 |
| openSUSE Tumbleweed | libxml2 | 2.9.4-1.22 | openSUSE-SU-2024:10192-1 |
| openSUSE Tumbleweed | python-libxml2 | 2.9.4-1.4 | openSUSE-SU-2024:10228-1 |
Advisories 8
- RHSA-2013:0217 Red Hat Security Advisory: mingw32-libxml2 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1512 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2580-1 libxml2 - buffer overflow Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10171-1 chromedriver-55.0.2883.75-3.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10228-1 python-libxml2-2.9.4-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10192-1 libxml2-2-2.9.4-1.22 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12948-1 ungoogled-chromium-113.0.5672.92-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1614 Tenable Security Nessus Network Monitor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 25, 2023
References
- https://bugzilla.redhat.com/show_bug.cgi?id=880466
- APPLE-SA-2013-10-22-8 vendor-advisory
- SUSE-SU-2013:1627 vendor-advisory
- openSUSE-SU-2012:1637 vendor-advisory
- http://googlechromereleases.blogspot.com/2012/11/stable-channel-update.html
- RHSA-2013:0217 vendor-advisory
- USN-1656-1 vendor-advisory
- DSA-2580 vendor-advisory
- http://support.apple.com/kb/HT6001
- google-libxml-buffer-underflow(80294) vdb-entry
- 1027815 vdb-entry
- 54886 third-party-advisory
- http://support.apple.com/kb/HT5934
- openSUSE-SU-2013:0178 vendor-advisory
- RHSA-2012:1512 vendor-advisory
- 55568 third-party-advisory
- 56684 vdb-entry
- http://git.gnome.org/browse/libxml2/commit/?id=6a36fbe3b3e001a8a840b5c1fdd81cefc9947f0d
- MDVSA-2013:056 vendor-advisory
- 51448 third-party-advisory
- https://code.google.com/p/chromium/issues/detail?id=158249
- APPLE-SA-2013-09-18-2 vendor-advisory