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Gentoo Linux Security Advisory                           GLSA 202402-12
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                                           https://security.gentoo.org/
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 Severity: High
    Title: GNU Tar: Out of Bounds Read
     Date: February 18, 2024
     Bugs: #898176
       ID: 202402-12

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Synopsis
========

A vulnerability has been discovered in GNU Tar which may lead to an out
of bounds read.

Background
==========

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

Affected packages
=================

Package       Vulnerable    Unaffected
------------  ------------  ------------
app-arch/tar  < 1.34-r3     >= 1.34-r3

Description
===========

A vulnerability have been discovered in GNU Tar. Please review the CVE
identifier referenced below for details.

Impact
======

GNU Tar has a one-byte out-of-bounds read that results in use of
uninitialized memory for a conditional jump. Exploitation to change the
flow of control has not been demonstrated. The issue occurs via a V7
archive in which mtime has approximately 11 whitespace characters.

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-1.34-r3"

References
==========

[ 1 ] CVE-2022-48303
      https://nvd.nist.gov/vuln/detail/CVE-2022-48303

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202402-12

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.

License
=======

Copyright 2024 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5