Archive::Tar: Directory traversal vulnerability

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.

Workaround

There is no known workaround at this time.

Resolution

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

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