Description
The HTTP Alternative Services feature in Mozilla Firefox before 37.0.1 allows man-in-the-middle attackers to bypass an intended X.509 certificate-verification step for an SSL server by specifying that server in the uri-host field of an Alt-Svc HTTP/2 response header.
References (7)
Core 7
Core References
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2557-1
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201512-10
Vendor Advisory x_refsource_confirm
http://www.mozilla.org/security/announce/2015/mfsa2015-44.html
Vendor Advisory x_refsource_confirm
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
Issue Tracking x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1148328
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00003.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1032030
Scores
EPSS
0.0012
EPSS Percentile
31.0%
Details
CWE
CWE-20
Status
published
Products (6)
canonical/ubuntu_linux
12.04
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
14.10
mozilla/firefox
< 37.0
opensuse/opensuse
13.1
opensuse/opensuse
13.2
Published
Apr 08, 2015
Tracked Since
Feb 18, 2026