CVE-2012-4208: Canonical Ubuntu Linux

Medium severity, CVSS 4.3. EPSS: 2.1% chance of exploitation in the next 30 days.

The XrayWrapper implementation in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 does not consider the compartment during property filtering, which allows remote attackers to bypass intended chrome-only restrictions on reading DOM object properties via a crafted web site.

Affected products

• Canonical Ubuntu Linux: version 10.04 only; version 11.10 only; version 12.04 only; version 12.10 only
• 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 Opensuse: version 11.4 only; version 12.1 only; version 12.2 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.