What’s Vulnerable › Vulnerabilities

CVE-2008-5052

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2008-11-13 · updated 2026-06-16
• Weakness: CWE-399

Description

The AppendAttributeValue function in the JavaScript engine in Mozilla Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 allows remote attackers to cause a denial of service (crash) via unknown vectors that trigger memory corruption, as demonstrated by e4x/extensions/regress-410192.js.

Affected products

• Mozilla Firefox: from 2.0 before 2.0.0.18 — fixed in 2.0.0.18
• Mozilla Seamonkey: from 1.0 through 1.1.13
• Mozilla Thunderbird: from 2.0 before 2.0.0.18 — fixed in 2.0.0.18

How to fix

Upgrade to a fixed version: Mozilla Firefox 2.0.0.18; Mozilla Thunderbird 2.0.0.18. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00004.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2008:228
• http://www.mandriva.com/security/advisories?name=MDVSA-2008:235
• http://www.mozilla.org/security/announce/2008/mfsa2008-52.html
• http://www.securityfocus.com/bid/32281
• http://www.securitytracker.com/id?1021183
• http://www.us-cert.gov/cas/techalerts/TA08-319A.html
• http://www.vupen.com/english/advisories/2008/3146
• https://bugzilla.mozilla.org/show_bug.cgi?id=454113
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9449
• http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00004.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2008:228

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