MalwareTeks Blog » Blog Archive » Firefox “firefoxurl” URI Handler Registration Vulnerability


 10 Jul 2007 @ 8:07 PM 
 

Firefox “firefoxurl” URI Handler Registration Vulnerability

 

A vulnerability has been discovered in Firefox, which can be exploited by malicious people to compromise a user’s system.

The problem is that Firefox registers the “firefoxurl://” URI handler and allows invoking firefox with arbitrary command line arguments. Using e.g. the “-chrome” parameter it is possible to execute arbitrary Javascript in chrome context. This can be exploited to execute arbitrary commands e.g. when a user visits a malicious web site using Microsoft Internet Explorer.

The vulnerability is confirmed in Firefox version 2.0.0.4 on a fully patched Windows XP SP2. Other versions may also be affected.

Secunia Advisory SA25984

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Categories: Uncategorized
Posted By: ShadowPuterDude
Last Edit: 10 Jul 2007 @ 08 07 PM
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