What’s Vulnerable › Vulnerabilities

CVE-2012-5829

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2012-11-21 · updated 2026-06-16
• Weakness: CWE-787

Description

Heap-based buffer overflow in the nsWindow::OnExposeEvent function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code via unspecified vectors.

Affected products

• Canonical Ubuntu Linux: 10.04, 11.10, 12.04, 12.10
• Debian Linux: 6.0, 7.0
• Mozilla Firefox: before 17.0; from 10.0 before 10.0.11 — fixed in 10.0.11, 17.0
• Mozilla Seamonkey: before 2.14 — fixed in 2.14
• Mozilla Thunderbird: before 17.0 — fixed in 17.0
• Mozilla Thunderbird ESR: from 10.0 before 10.0.11 — fixed in 10.0.11
• Opensuse: 11.4, 12.1, 12.2
• RedHat Enterprise Linux Desktop: 5.0, 6.0
• RedHat Enterprise Linux Eus: 6.3
• RedHat Enterprise Linux Server: 5.0, 6.0
• RedHat Enterprise Linux Workstation: 5.0, 6.0
• SUSE Linux Enterprise Server 15 SP1: 10-sp4, 11-sp2
• SUSE Linux Enterprise Server: 10-sp4, 11-sp2
• SUSE Linux Enterprise Software Development Kit: 10-sp4, 11-sp2

How to fix

Upgrade to a fixed version: Mozilla Firefox 10.0.11, 17.0; Mozilla Seamonkey 2.14; Mozilla Thunderbird 17.0; Mozilla Thunderbird ESR 10.0.11. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.html
• http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00007.html
• http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00010.html
• http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00017.html
• http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.html
• http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.html
• http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.html
• http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.html
• http://osvdb.org/87608
• http://rhn.redhat.com/errata/RHSA-2012-1482.html
• http://rhn.redhat.com/errata/RHSA-2012-1483.html

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