CVE-2011-2378

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-08-18 · updated 2026-06-16
Weakness: CWE-94

Description

The appendChild function in Mozilla Firefox before 3.6.20, Thunderbird 3.x before 3.1.12, SeaMonkey 2.x, and possibly other products does not properly handle DOM objects, which allows remote attackers to execute arbitrary code via unspecified vectors that lead to dereferencing of a "dangling pointer."

Affected products

Mozilla Firefox: through 3.6.19; 1.0, 1.0-preview_release, 1.0.1, 1.0.2, 1.0.3, 1.0.4 (+103)
Mozilla Seamonkey: 2.0, 2.0-alpha_1, 2.0-alpha_2, 2.0-alpha_3, 2.0-beta_1, 2.0-beta_2 (+19)
Mozilla Thunderbird: 3.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5 (+16)

References

http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00027.html
http://www.debian.org/security/2011/dsa-2295
http://www.debian.org/security/2011/dsa-2296
http://www.debian.org/security/2011/dsa-2297
http://www.mandriva.com/security/advisories?name=MDVSA-2011:127
http://www.mozilla.org/security/announce/2011/mfsa2011-30.html
http://www.redhat.com/support/errata/RHSA-2011-1164.html
http://www.redhat.com/support/errata/RHSA-2011-1166.html
https://bugzilla.mozilla.org/show_bug.cgi?id=648065
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14163
http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00023.html

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