GLSA 201111-11: GNU Tar: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	GNU Tar: User-assisted execution of arbitrary code
Date:	11/20/2011
Bugs:	#313333
ID:	201111-11

Synopsis

A buffer overflow flaw in GNU Tar could result in execution of arbitrary code or a Denial of Service.

Background

GNU Tar is a utility to create archives as well as add and extract files from archives.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-arch/tar	< 1.23	>= 1.23	All supported architectures

Description

GNU Tar is vulnerable to a boundary error in the rmt_read__ function in lib/rtapelib.c, which could cause a heap-based buffer overflow.

Impact

A remote attacker could entice the user to load a specially crafted archive, possibly resulting in the execution of arbitrary code or a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All GNU Tar users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-arch/tar-1.23"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since July 18, 2010. It is likely that your system is already no longer affected by this issue.

References

CVE-2010-0624

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201111-11.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.