CVE-2014-1487: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

The Web workers implementation in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, and SeaMonkey before 2.24 allows remote attackers to bypass the Same Origin Policy and obtain sensitive authentication information via vectors involving error messages.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 12.10 only; version 13.10 only
• Debian Debian Linux: version 7.0 only
• Fedoraproject Fedora: version 19 only; version 20 only
• Mozilla Firefox: before 27.0 (fixed in 27.0); from 24.0, before 24.3 (fixed in 24.3)
• Mozilla Seamonkey: before 2.24 (fixed in 2.24)
• Mozilla Thunderbird: before 24.3 (fixed in 24.3)
• Opensuse Opensuse: version 11.4 only; version 12.3 only; version 13.1 only
• Red Hat Enterprise Linux Desktop: version 5.0 only; version 6.0 only
• Red Hat Enterprise Linux Eus: version 6.5 only
• Red Hat Enterprise Linux Server: version 5.0 only; version 6.0 only
• Red Hat Enterprise Linux Server Aus: version 6.5 only
• Red Hat Enterprise Linux Server Eus: version 6.5 only
• Red Hat Enterprise Linux Server Tus: version 6.5 only
• Red Hat Enterprise Linux Workstation: version 5.0 only; version 6.0 only
• Suse Suse Linux Enterprise Desktop: version 11 only
• Suse Suse Linux Enterprise Server: version 11 only
• Suse Suse Linux Enterprise Software Development Kit: version 11.0 only

Published 2014-02-06. Last modified 2026-06-17.