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Extremely critical

Mozilla Firefox / SeaMonkey "document.write()" and DOM Insertion Vulnerability

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Release Date:  2010-10-27    Last Update:  2010-10-28    Views:  17,423

Secunia Advisory SA41957

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A vulnerability has been reported in Mozilla Firefox and SeaMonkey, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an error when handling "document.write()" in combination with DOM insertions and can be exploited to cause a heap-based buffer overflow.

NOTE: The vulnerability is currently being actively exploited.


Solution:
Update to Mozilla Firefox version 3.5.15 or 3.6.12 and Mozilla SeaMonkey version 2.0.10.

Provided and/or discovered by:
Reported as a 0-day.

The vendor also credits Morten Kråkvik, Telenor SOC.

Original Advisory:
Mozilla:
http://blog.mozilla.com/security/2010/10/26/critical-vulnerability-in-firefox-3-5-and-firefox-3-6/
http://www.mozilla.org/security/announce/2010/mfsa2010-73.html

Norman ASA:
http://norman.com/about_norman/press_center/news_archive/2010/129223/en

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 / SeaMonkey "document.write()" and DOM Insertion Vulnerability

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