CVE-2015-0799

Mozilla: Certificate verification bypass through the HTTP/2 Alt-Svc header (MFSA 2015-44)

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Severity

Important

Red Hat Product Security

5.8

CVSS 2.0

Review impact separately from score.

Published · April 3, 2015

Updated · January 9, 2026

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.

Statement

This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5, 6 and 7.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 2.0 · 5.8
AV:N/AC:M/Au:N/C:P/I:P/A:N

CWE not specified