Archive::Tar: Directory traversal vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200812-10 / Archive-Tar
Release Date	December 10, 2008
Latest Revision	December 10, 2008: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
perl-core/Archive-Tar	< 1.40	>= 1.40	All supported architectures

Related bugreports: #192989

Synopsis

A directory traversal vulnerability has been discovered in Archive::Tar.

2. Impact Information

Background

Archive::Tar is a Perl module for creation and manipulation of tar files.

Description

Jonathan Smith of rPath reported that Archive::Tar does not check for ".." in file names.

Impact

A remote attacker could entice a user or automated system to extract a specially crafted tar archive, overwriting files at arbitrary locations outside of the specified directory.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Archive::Tar users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=perl-core/Archive-Tar-1.40"

4. References

CVE-2007-4829

Page updated December 10, 2008

Summary: This is a Gentoo Linux Security Advisory

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