Firefox < 37.0.1 HTTP/2 Alt-Svc Header Certificate Verification Bypass

Medium Nessus Plugin ID 82583


The remote Windows host contains a web browser that is affected by a security bypass vulnerability.


The version of Firefox installed on the remote Windows host is prior to 37.0.1. It is, therefore, affected by an error related to the HTTP/2 'Alt-Svc' header and SSL certificate verification, which allows man-in-the-middle (MitM) attacks.


Upgrade to Firefox 37.0.1 or later.

See Also

Plugin Details

Severity: Medium

ID: 82583

File Name: mozilla_firefox_37_0_1.nasl

Version: $Revision: 1.5 $

Type: local

Agent: windows

Family: Windows

Published: 2015/04/06

Modified: 2015/05/16

Dependencies: 20862

Risk Information

Risk Factor: Medium


Base Score: 5.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: Mozilla/Firefox/Version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/04/03

Vulnerability Publication Date: 2015/04/03

Reference Information

CVE: CVE-2015-0799

BID: 73905

OSVDB: 120297