GLSA 200608-17: libwmf: Buffer overflow vulnerability

http://security.gentoo.org/

Severity:	normal
Title:	libwmf: Buffer overflow vulnerability
Date:	08/10/2006
Bugs:	#139325
ID:	200608-17

Synopsis

libwmf is vulnerable to an integer overflow potentially resulting in the execution of arbitrary code.

Background

libwmf is a library for reading and converting vector images in Microsoft's native Windows Metafile Format (WMF).

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
media-libs/libwmf	< 0.2.8.4	>= 0.2.8.4	All supported architectures

Description

infamous41md discovered that libwmf fails to do proper bounds checking on the MaxRecordSize variable in the WMF file header. This could lead to an head-based buffer overflow.

Impact

By enticing a user to open a specially crafted WMF file, a remote attacker could cause a heap-based buffer overflow and execute arbitrary code with the permissions of the user running the application that uses libwmf.

Workaround

There is no known workaround for this issue.

Resolution

All libwmf users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libwmf-0.2.8.4"

References

CVE-2006-3376

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200608-17.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.