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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
Mozilla Firefox Bug in Processing Unicode Characters Lets Remote Users Deny Service
SecurityTracker Alert ID:  1022580
SecurityTracker URL:  http://securitytracker.com/id/1022580
CVE Reference:   CVE-2009-2479   (Links to External Site)
Updated:  Jul 20 2009
Original Entry Date:  Jul 20 2009
Impact:   Denial of service via network
Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 3.5, 3.5.1; possibly other versions
Description:   A vulnerability was reported in Mozilla Firefox. A remote user can cause denial of service conditions.

A remote user can create specially crafted HTML that, when loaded by the target user, will cause the target user's browser to crash.

A demonstration exploit is available at:

http://www.milw0rm.com/exploits/9158

Andrew Haynes and Simon Berry-Byrne reported this vulnerability.

[Editor's note: The bug was originally reported as a stack overflow. However, the vendor has responded that it is not a stack overflow and that they "do not believe that this represents an exploitable vulnerability."]

Impact:   A remote user can create HTML that, when loaded by the target user, will cause the target user's browser to crash.
Solution:   No solution was available at the time of this entry.

The vendor's advisory is available at:

http://blog.mozilla.com/security/2009/07/19/milw0rm-9158-stack-overflow-crash-not-exploitable-cve-2009-2479/

Vendor URL:  www.mozilla.com/ (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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