CVE-2015-0812: Canonical Ubuntu Linux

Medium severity, CVSS 4.3. EPSS: 1.3% chance of exploitation in the next 30 days.

Mozilla Firefox before 37.0 does not require an HTTPS session for lightweight theme add-on installations, which allows man-in-the-middle attackers to bypass an intended user-confirmation requirement by deploying a crafted web site and conducting a DNS spoofing attack against a mozilla.org subdomain.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 14.10 only
• Mozilla Firefox: version 36.0.4 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only

Published 2015-04-01. Last modified 2026-06-17.