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Insecure Library Loading
Not critical

Mozilla Firefox "keypress" User Interface Event Dispatching Weakness

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Release Date:  2008-10-01    Last Update:  2008-12-26    Views:  8,448

Secunia Advisory SA32040

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Aditya K Sood has discovered a weakness in Mozilla Firefox, which can be exploited by malicious people to cause a DoS (Denial of Service).

The weakness is caused due to an error when dispatching "keypress" user interface events with e.g. the HTML root element as target. This may potentially result in use of invalid memory or memory corruption via a specially crafted web page.

Successful exploitation crashes the browser. However, even though code execution has not been proven, it can't be completely ruled out.

The weakness is confirmed in version 3.0.3 for Windows. Version 2.x is not affected.

NOTE: Secunia normally does not classify a browser crash as a vulnerability nor issue an advisory about it. However, the potential impact of this issue may be more severe than currently believed.


Solution:
Update to version 3.0.4 or later.

Provided and/or discovered by:
Reported as a NULL-pointer dereference crash by Aditya K Sood.

Additional information provided by Secunia Research.

Original Advisory:
http://www.secniche.org/moz303.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Mozilla Firefox "keypress" User Interface Event Dispatching Weakness

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