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Category:   Application (Web Browser)  >   w3m Vendors:   Ito, Akinori
w3m Format String Bug in Processing Certificates May Permit Remote Code Execution
SecurityTracker Alert ID:  1017440
SecurityTracker URL:  http://securitytracker.com/id/1017440
CVE Reference:   CVE-2006-6772   (Links to External Site)
Updated:  May 20 2008
Original Entry Date:  Dec 26 2006
Impact:   Execution of arbitrary code via network, User access via network
Exploit Included:  Yes  
Version(s): 0.5.1
Description:   A vulnerability was reported in w3m. A remote user may be able to cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted certificate that, when loaded by the target user's w3m browser, will trigger a format string error and potentially execute arbitrary code on the target user's system.

An SSL certificate with a CN value of "%n%n%n%n%n%n" can trigger this flaw.

The report did not confirm arbitrary code execution.

The original advisory is available at:

http://sourceforge.net/tracker/index.php?func=detail&aid=1612792&group_id=39518&atid=425439

Impact:   A remote user can create a certificate that, when loaded by the target user's browser, may execute arbitrary code on the target user's system.
Solution:   No solution was available at the time of this entry.
Vendor URL:  w3m.sourceforge.net/ (Links to External Site)
Cause:   Input validation error, State error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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