What’s Vulnerable › Vulnerabilities

CVE-2013-6671

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 11.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2013-12-11 · updated 2026-06-17
• Weakness: CWE-94

Description

The nsGfxScrollFrameInner::IsLTR function in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 allows remote attackers to execute arbitrary code via crafted use of JavaScript code for ordered list elements.

Affected products

• Canonical Ubuntu Linux: 12.04, 12.10, 13.04, 13.10
• Fedoraproject Fedora: 18, 19, 20
• Mozilla Firefox: before 26.0; from 24.0 before 24.2 — fixed in 24.2, 26.0
• Mozilla Seamonkey: before 2.23 — fixed in 2.23
• Mozilla Thunderbird: before 24.2 — fixed in 24.2
• Opensuse: 12.2, 12.3, 13.1
• RedHat Enterprise Linux Desktop: 5.0, 6.0
• RedHat Enterprise Linux Eus: 6.5
• RedHat Enterprise Linux Server: 5.0, 6.0
• RedHat Enterprise Linux Server Aus: 6.5
• RedHat Enterprise Linux Server Eus: 6.5
• RedHat Enterprise Linux Server Tus: 6.5
• RedHat Enterprise Linux Workstation: 5.0, 6.0
• Suse Linux Enterprise Desktop: 11-sp3
• SUSE Linux Enterprise: 11-sp3
• Suse Linux Enterprise Software Development Kit: 11.0-sp3

How to fix

Upgrade to a fixed version: Mozilla Firefox 24.2, 26.0; Mozilla Seamonkey 2.23; Mozilla Thunderbird 24.2. Check the vendor advisory for mitigations.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2013-December/123437.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124108.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124257.html
• http://lists.fedoraproject.org/pipermail/package-announce/2014-January/125470.html
• http://lists.opensuse.org/opensuse-security-announce/2013-12/msg00010.html
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00085.html
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00086.html
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00087.html
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00119.html
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00120.html
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00121.html
• http://lists.opensuse.org/opensuse-updates/2014-01/msg00002.html

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