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[ GLSA 200709-09 ] GNU Tar: Directory traversal vulnerability
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PostPosted: Sat Sep 15, 2007 11:26 pm    Post subject: [ GLSA 200709-09 ] GNU Tar: Directory traversal vulnerabilit Reply with quote

Gentoo Linux Security Advisory

Title: GNU Tar: Directory traversal vulnerability (GLSA 200709-09)
Severity: normal
Exploitable: remote
Date: September 15, 2007
Bug(s): #189682
ID: 200709-09

Synopsis

A directory traversal vulnerability has been discovered in GNU Tar.

Background

The GNU Tar program provides the ability to create tar archives, as well as various other kinds of manipulation.

Affected Packages

Package: app-arch/tar
Vulnerable: < 1.18-r2
Unaffected: >= 1.18-r2
Architectures: All supported architectures


Description

Dmitry V. Levin discovered a directory traversal vulnerability in the contains_dot_dot() function in file src/names.c.

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 GNU Tar.

Workaround

There is no known workaround at this time.

Resolution

All GNU Tar users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/tar-1.18-r2"


References

CVE-2007-4131
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