GLSA 200801-14: Blam: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	Blam: User-assisted execution of arbitrary code
Date:	01/27/2008
Bugs:	#199841
ID:	200801-14

Synopsis

Blam doesn't properly handle environment variables, potentially allowing a local attacker to execute arbitrary code.

Background

Blam is an RSS and Atom feed reader for GNOME written in C#.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-news/blam	< 1.8.4	>= 1.8.4	All supported architectures

Description

The "/usr/bin/blam" script sets the "LD_LIBRARY_PATH" environment variable incorrectly, which might result in the current working directory (.) being included when searching for dynamically linked libraries of the Mono Runtime application.

Impact

A local attacker could entice a user to run Blam in a directory containing a specially crafted library file which could result in the execution of arbitrary code with the privileges of the user running Blam.

Workaround

Do not run Blam from an untrusted working directory.

Resolution

All Blam users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-news/blam-1.8.4"

References

CVE-2005-4790

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200801-14.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.