Firefox < 3.5.18 Invalid HTTP Certificates

Medium Nessus Plugin ID 52766


The remote Windows host contains a web browser with an out-of-date SSL certificate blacklist.


The installed version of Firefox is earlier than 3.5.18. Such versions have an out-of-date SSL certificate blacklist.

A certificate authority (CA) has revoked a number of fraudulent SSL certificates for several prominent public websites.

If an attacker can trick someone into using the affected browser and visiting a malicious site using one of the fraudulent certificates, he may be able to fool that user into believing the site is a legitimate one. In turn, the user could send credentials to the malicious site or download and install applications.


Upgrade to Firefox 3.5.18 or later.

See Also

Plugin Details

Severity: Medium

ID: 52766

File Name: mozilla_firefox_3518.nasl

Version: $Revision: 1.5 $

Type: local

Agent: windows

Family: Windows

Published: 2011/03/23

Modified: 2017/06/09

Dependencies: 20862

Risk Information

Risk Factor: Medium


Base Score: 6.8

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

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: Mozilla/Firefox/Version

Patch Publication Date: 2011/03/22

Vulnerability Publication Date: 2011/03/22