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TITLE:
Tk GIF Processing Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA28784

VERIFY ADVISORY:
http://secunia.com/advisories/28784/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Tcl/Tk 8.x
http://secunia.com/product/5666/

DESCRIPTION:
A vulnerability has been reported in Tk, which can potentially be
exploited by malicious people to compromise an application using the
library.

The vulnerability is caused due to a boundary error when processing
GIF images within the "ReadImage()" function in tkImgGIF.c. This can
be exploited to cause a stack-based buffer overflow via a specially
crafted GIF image.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is reported in versions prior to 8.5.1.

SOLUTION:
Update to version 8.5.1.
http://www.tcl.tk/software/tcltk/download.html

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://sourceforge.net/project/shownotes.php?release_id=573933&group_id=10894

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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http://secunia.com/about_secunia_advisories/


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Secunia NEVER sends attached files with advisories.
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