What’s Vulnerable › Vulnerabilities

CVE-2012-4205

• Severity: medium (CVSS 6.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2012-11-21 · updated 2026-06-16
• Weakness: CWE-352

Description

Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 assign the system principal, rather than the sandbox principal, to XMLHttpRequest objects created in sandboxes, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks or obtain sensitive information by leveraging a sandboxed add-on.

Affected products

• Canonical Ubuntu Linux: 10.04, 11.10, 12.04, 12.10
• Mozilla Firefox: before 17.0 — fixed in 17.0
• Mozilla Seamonkey: before 2.14 — fixed in 2.14
• Mozilla Thunderbird: before 17.0 — fixed in 17.0
• Opensuse: 11.4, 12.1, 12.2
• SUSE Linux Enterprise Server 15 SP1: 10-sp4, 11-sp2
• SUSE Linux Enterprise Server: 10-sp4, 11-sp2
• SUSE Linux Enterprise Software Development Kit: 11-sp2, 11-sp3

How to fix

Upgrade to a fixed version: Mozilla Firefox 17.0; Mozilla Seamonkey 2.14; Mozilla Thunderbird 17.0. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.html
• http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.html
• http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.html
• http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.html
• http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.html
• http://secunia.com/advisories/51369
• http://secunia.com/advisories/51370
• http://secunia.com/advisories/51381
• http://secunia.com/advisories/51434
• http://secunia.com/advisories/51439
• http://secunia.com/advisories/51440
• http://www.mozilla.org/security/announce/2012/mfsa2012-97.html

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