What’s Vulnerable › Vulnerabilities

CVE-2012-0475

• Severity: low (CVSS 2.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2012-04-25 · updated 2026-06-16
• Weakness: CWE-264

Description

Mozilla Firefox 4.x through 11.0, Thunderbird 5.0 through 11.0, and SeaMonkey before 2.9 do not properly construct the Origin and Sec-WebSocket-Origin HTTP headers, which might allow remote attackers to bypass an IPv6 literal ACL via a cross-site (1) XMLHttpRequest or (2) WebSocket operation involving a nonstandard port number and an IPv6 address that contains certain zero fields.

Affected products

• Mozilla Firefox: 4.0, 4.0-beta1, 4.0-beta10, 4.0-beta11, 4.0-beta12, 4.0-beta2 (+23)
• Mozilla Seamonkey: through 2.9; 1.0, 1.0-alpha, 1.0-beta, 1.0.1, 1.0.2, 1.0.3 (+106)
• Mozilla Thunderbird: 5.0, 6.0, 6.0.1, 6.0.2, 7.0, 7.0.1 (+9)

References

• http://secunia.com/advisories/48972
• http://secunia.com/advisories/49047
• http://secunia.com/advisories/49055
• http://www.mozilla.org/security/announce/2012/mfsa2012-28.html
• http://www.securityfocus.com/bid/53230
• https://bugzilla.mozilla.org/show_bug.cgi?id=694576
• https://exchange.xforce.ibmcloud.com/vulnerabilities/75153
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16279
• http://secunia.com/advisories/48972
• http://secunia.com/advisories/49047
• http://secunia.com/advisories/49055
• http://www.mozilla.org/security/announce/2012/mfsa2012-28.html

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