CVE-2012-4201: Canonical Ubuntu Linux

Medium severity, CVSS 4.3. EPSS: 3.1% chance of exploitation in the next 30 days.

The evalInSandbox implementation in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 uses an incorrect context during the handling of JavaScript code that sets the location.href property, which allows remote attackers to conduct cross-site scripting (XSS) attacks or read arbitrary files by leveraging a sandboxed add-on.

Affected products

• Canonical Ubuntu Linux: version 10.04 only; version 11.10 only; version 12.04 only; version 12.10 only
• Debian Debian Linux: version 6.0 only; version 7.0 only
• Mozilla Firefox: before 17.0 (fixed in 17.0); from 10.0, before 10.0.11 (fixed in 10.0.11)
• Mozilla Seamonkey: before 2.14 (fixed in 2.14)
• Mozilla Thunderbird: before 17.0 (fixed in 17.0)
• Mozilla Thunderbird ESR: from 10.0, before 10.0.11 (fixed in 10.0.11)
• Opensuse Opensuse: version 11.4 only; version 12.1 only; version 12.2 only
• Red Hat Enterprise Linux Desktop: version 5.0 only; version 6.0 only
• Red Hat Enterprise Linux Eus: version 6.3 only
• Red Hat Enterprise Linux Server: version 5.0 only; version 6.0 only
• Red Hat Enterprise Linux Workstation: version 5.0 only; version 6.0 only
• Suse Linux Enterprise Desktop: version 10 only; version 11 only
• Suse Linux Enterprise Server: version 10 only; version 11 only
• Suse Linux Enterprise Software Development Kit: version 10 only; version 11 only

Published 2012-11-21. Last modified 2026-06-16.