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

medium Nessus Plugin ID 82583
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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: 1.7

Type: local

Agent: windows

Family: Windows

Published: 4/6/2015

Updated: 11/22/2019

Dependencies: mozilla_org_installed.nasl

Risk Information

CVSS Score Source: CVE-2015-0799


Risk Factor: Low

Score: 3.4


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: Mozilla/Firefox/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 4/3/2015

Vulnerability Publication Date: 4/3/2015

Reference Information

CVE: CVE-2015-0799

BID: 73905