CVE-2011-2821 json
Double free vulnerability in libxml2, as used in Google Chrome before 13.0.782.215, allows remote attackers to cause a denial of service or…
published 2011-08-29 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2795
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
Double free vulnerability in libxml2, as used in Google Chrome before 13.0.782.215, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted XPath expression.
Patch / fix
- google chrome 13.0.782.215
- apple iphone_os 6.0
- apple mac_os_x 10.7.4
- libxml2 Debian 14, Debian 13, Debian 12 2.7.8.dfsg-5
debian advisories DEBIAN-CVE-2011-2821
- mingw32-libxml2 RHEL 6 2.7.6-6.el6_3
- libxml2 RHEL 6 2.7.6-4.el6
- libxml2-python RHEL 6 2.7.6-4.el6
red hat advisories RHSA-2013:0217RHSA-2011:1749
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2011-2821 updated cvss 4.3
libxml2: double free caused by malformed XPath expression in XSLT
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Red Hat Enterprise Linux Desktop (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6fixed: vendor fix RHSA-2011:1749
-
Red Hat Enterprise Linux Desktop Optional (v. 6) libxml2 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3fixed: vendor fix RHSA-2013:0217
-
Red Hat Enterprise Linux HPC Node (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6fixed: vendor fix RHSA-2011:1749
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Red Hat Enterprise Linux HPC Node Optional (v. 6) libxml2 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3fixed: vendor fix RHSA-2013:0217
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Red Hat Enterprise Linux Server (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6fixed: vendor fix RHSA-2011:1749
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Red Hat Enterprise Linux Server Optional (v. 6) libxml2 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3fixed: vendor fix RHSA-2013:0217
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Red Hat Enterprise Linux Workstation (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6fixed: vendor fix RHSA-2011:1749
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Red Hat Enterprise Linux Workstation Optional (v. 6) libxml2 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3fixed: vendor fix RHSA-2013:0217
show 1 moreshow fewer
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Red Hat Enterprise Linux 4 libxml2 Red Hat Enterprise Linux 5 libxml2not affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
1.69% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-415 Double Free
- Technology feeds
References
-
mandriva.com
/security/advisories?name=MDVSA-2011:145
vendor-advisory
-
h20000.www2.hp.com
/bizsupport/TechSupport/Document.jsp?objectID=c03360041
vendor-advisory
-
lists.apple.com
/archives/security-announce/2012/Sep/msg00003.html
vendor-advisory
-
rhn.redhat.com
/errata/RHSA-2013-0217.html
vendor-advisory
-
redhat.com
/support/errata/RHSA-2011-1749.html
vendor-advisory
-
lists.apple.com
/archives/security-announce/2012/May/msg00001.html
vendor-advisory
-
debian.org
/security/2012/dsa-2394
vendor-advisory
- support.apple.com /kb/HT5503
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13840
vdb-entry, signature
- code.google.com /p/chromium/issues/detail?id=89402
- googlechromereleases.blogspot.com /2011/08/stable-channel-update_22.html
- support.apple.com /kb/HT5281
Sources
- CVE List CVE-2011-2821
- NVD CVE-2011-2821
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.