CVE-2015-0819: Canonical Ubuntu Linux

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

The UITour::onPageEvent function in Mozilla Firefox before 36.0 does not ensure that an API call originates from a foreground tab, which allows remote attackers to conduct spoofing and clickjacking attacks by leveraging access to a UI Tour web site.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 14.10 only
• Mozilla Firefox: up to and including 35.0.1; version 0.1 only; version 0.2 only; version 0.3 only; version 0.4 only; version 0.5 only; …
• Opensuse Opensuse: version 13.1 only; version 13.2 only

Published 2015-02-25. Last modified 2026-06-17.