Mozilla Firefox 3.5.x < 3.5.18 Invalid HTTP Certificates

Medium Nessus Network Monitor Plugin ID 5843


The remote host has a web browser installed that is vulnerable to multiple attack vectors.


Versions of Firefox earlier than 3.5.18 have an out-of-date SSL certificate blacklist.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: 5843

Family: Web Clients

Published: 2011/03/25

Modified: 2016/03/12

Dependencies: 9131

Nessus ID: 52766

Risk Information

Risk Factor: Medium

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Patch Publication Date: 2011/03/22

Vulnerability Publication Date: 2011/03/22