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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2015-0799 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5, 6 and 7.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
Base Score | 5.8 |
---|---|
Base Metrics | AV:N/AC:M/Au:N/C:P/I:P/A:N |
Access Vector | Network |
Access Complexity | Medium |
Authentication | None |
Confidentiality Impact | Partial |
Integrity Impact | Partial |
Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Platform | Package | State |
---|---|---|
Red Hat Enterprise Linux 7 | firefox | Not affected |
Red Hat Enterprise Linux 7 | thunderbird | Not affected |
Red Hat Enterprise Linux 6 | firefox | Not affected |
Red Hat Enterprise Linux 6 | thunderbird | Not affected |
Red Hat Enterprise Linux 5 | thunderbird | Not affected |
Red Hat Enterprise Linux 5 | firefox | Not affected |