What’s Vulnerable › Vulnerabilities

CVE-2013-1720

• Severity: medium (CVSS 6.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2013-09-18 · updated 2026-06-16
• Weakness: CWE-119

Description

The nsHtml5TreeBuilder::resetTheInsertionMode function in the HTML5 Tree Builder in Mozilla Firefox before 24.0, Thunderbird before 24.0, and SeaMonkey before 2.21 does not properly maintain the state of the insertion-mode stack for template elements, which allows remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer over-read) by triggering use of this stack in its empty state.

Affected products

• Mozilla Firefox: through 23.0.1; 19.0, 19.0.1, 19.0.2, 20.0, 20.0.1, 21.0 (+2)
• Mozilla Seamonkey: through 2.20; 2.0, 2.0-alpha_1, 2.0-alpha_2, 2.0-alpha_3, 2.0-beta_1, 2.0-beta_2 (+93)
• Mozilla Thunderbird: through 17.0.9; 17.0, 17.0.1, 17.0.2, 17.0.3, 17.0.4, 17.0.5 (+3)

References

• http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115907.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116610.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-September/117526.html
• http://lists.opensuse.org/opensuse-updates/2013-09/msg00055.html
• http://lists.opensuse.org/opensuse-updates/2013-09/msg00057.html
• http://lists.opensuse.org/opensuse-updates/2013-09/msg00059.html
• http://lists.opensuse.org/opensuse-updates/2013-09/msg00061.html
• http://www.mozilla.org/security/announce/2013/mfsa2013-77.html
• http://www.securityfocus.com/bid/62465
• http://www.ubuntu.com/usn/USN-1951-1
• http://www.ubuntu.com/usn/USN-1952-1
• https://bugzilla.mozilla.org/show_bug.cgi?id=888820

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