GLSA 200710-23: Star: Directory traversal vulnerability

http://security.gentoo.org/

Severity:	low
Title:	Star: Directory traversal vulnerability
Date:	10/22/2007
Bugs:	#189690
ID:	200710-23

Synopsis

A directory traversal vulnerability has been discovered in Star.

Background

The Star program provides the ability to create and extract tar archives.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-arch/star	< 1.5_alpha84	>= 1.5_alpha84	All supported architectures

Description

Robert Buchholz of the Gentoo Security team discovered a directory traversal vulnerability in the has_dotdot() function which does not identify //.. (slash slash dot dot) sequences in file names inside tar files.

Impact

By enticing a user to extract a specially crafted tar archive, a remote attacker could extract files to arbitrary locations outside of the specified directory with the permissions of the user running Star.

Workaround

There is no known workaround at this time.

Resolution

All Star users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-arch/star-1.5_alpha84"

References

CVE-2007-4134

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200710-23.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.