GLSA 200710-07: Tk: Buffer overflow

http://security.gentoo.org/

Severity:	normal
Title:	Tk: Buffer overflow
Date:	10/07/2007
Bugs:	#192539
ID:	200710-07

Synopsis

A buffer overflow vulnerability has been discovered in Tk.

Background

Tk is a toolkit for creating graphical user interfaces.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-lang/tk	< 8.4.15-r1	>= 8.4.15-r1	All supported architectures

Description

Reinhard Max discovered a boundary error in Tk when processing an interlaced GIF with two frames where the second is smaller than the first one.

Impact

A remote attacker could entice a user to open a specially crafted GIF image with a Tk-based software, possibly resulting in the execution of arbitrary code with the privileges of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All Tk users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/tk-8.4.15-r1"

References

CVE-2007-4851

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200710-07.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.