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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0812
Reference (s):
- http://www.mozilla.org/security/announce/2015/mfsa2015-32.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1128126
- GENTOO:GLSA-201512-10
- URL: https://security.gentoo.org/glsa/201512-10