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Date: Fri, 24 Jun 2011 11:12:02 +0200
From: Jan Lieskovsky <>
To: "Steven M. Christey" <>,
        Matthias Clasen <>,
        Mark Doliner <>
Subject: CVE-2011-2485 assignment notification -- gdk-pixbuf

Hello Josh, Steve, vendors,

   the following security flaw has been found in the way gdk-pixbuf, an
image loading library, loaded certain Graphics Interchange Format (GIF) 
image files:

It was found that gdk-pixbuf's gdk_pixbuf__gif_image_load() GIF image 
loader routine did not properly handle certain return values from its
subroutines. A remote attacker could provide a specially-crafted GIF
image, which once opened in an application, linked against gdk-pixbuf
would lead to gdk-pixbuf to return partially initialized pixbuf
structure, possibly having huge width and height, leading to that
particular application termination due excessive memory use.

The CVE identifier of CVE-2011-2485 has been assigned to this issue.



This issue could lead (for example) in Pidgin to:

A remote attacker could set a specially-crafted GIF image as their
buddy icon that could lead to Pidgin being terminated due to excessive
memory use.


Credit: Issue has been discovered and reported by Mark Doliner
         of the Pidgin project.

We did not allocate a second CVE identifier for the Pidgin issue,
since the true underlying reason for this was the gdk-pixbuf image 
loading library problem. This is based on last paragraph from:

more exactly on that part about 'issues like incorrectly
reporting error status from an API function' (although this not
being case of compiler, but rather case of library).

Thank you && Regards, Jan.
Jan iankko Lieskovsky / Red Hat Security Response Team

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