Secure Coding mailing list archives

HNS - Biggest X Window security hole since 2000


From: ljknews at mac.com (ljknews)
Date: Fri, 5 May 2006 09:05:31 -0400

At 11:12 AM -0400 5/4/06, Kenneth R. van Wyk wrote:
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Stories about this (below) X bug and the DHS-sponsored project that found it 
have been floating around the net all week.  This story caught my eye, 
though:

http://www.net-security.org/secworld.php?id=3994

The author claims, "This flaw, caused by something as seemingly harmless as a 
missing closing parenthesis, allowed local users to execute code with root 

Certainly that part is OS-specific.  On my VMS machine, X-windows processes
do not run as root.

privileges, giving them the ability to overwrite system files or initiate 
denial of service attacks."

So, it sounds like a single byte change in the entire X src tree could fix a 
bug that could give an attacker complete control of a system.  Lovely...
-- 
Larry Kilgallen



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