What’s Vulnerable › Vulnerabilities

CVE-2006-6500

• Severity: medium (CVSS 6.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2006-12-20 · updated 2026-06-16
• Weakness: CWE-119

Description

Heap-based buffer overflow in Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code by setting the CSS cursor to certain images that cause an incorrect size calculation when converting to a Windows bitmap.

Affected products

• Canonical Ubuntu Linux: 5.10, 6.06, 6.10
• Debian Linux: 3.1, 4.0
• Mozilla Firefox: from 1.5 before 1.5.0.9; from 2.0 before 2.0.0.1 — fixed in 1.5.0.9, 2.0.0.1
• Mozilla Seamonkey: before 1.0.7 — fixed in 1.0.7
• Mozilla Thunderbird: before 1.5.0.9 — fixed in 1.5.0.9

How to fix

Upgrade to a fixed version: Mozilla Firefox 1.5.0.9, 2.0.0.1; Mozilla Seamonkey 1.0.7; Mozilla Thunderbird 1.5.0.9. Check the vendor advisory for mitigations.

References

• http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742
• http://secunia.com/advisories/23282
• http://secunia.com/advisories/23420
• http://secunia.com/advisories/23422
• http://secunia.com/advisories/23545
• http://secunia.com/advisories/23598
• http://secunia.com/advisories/23614
• http://secunia.com/advisories/23672
• http://secunia.com/advisories/23692
• http://security.gentoo.org/glsa/glsa-200701-02.xml
• http://securitytracker.com/id?1017399
• http://securitytracker.com/id?1017400

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