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Gentoo Linux Security Advisory                           GLSA 202003-28
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: libarchive: Multiple vulnerabilities
     Date: March 15, 2020
     Bugs: #699222, #710358
       ID: 202003-28

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Synopsis
=======
Multiple vulnerabilities have been found in libarchive, the worst of
which may lead to arbitrary code execution.

Background
=========
libarchive is a library for manipulating different streaming archive
formats, including certain tar variants, several cpio formats, and both
BSD and GNU ar variants.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-arch/libarchive          < 3.4.2                    >= 3.4.2

Description
==========
Multiple vulnerabilities have been discovered in libarchive. Please
review the CVE identifiers referenced below for details.

Impact
=====
A remote attacker could entice a user to open a specially crafted
archive file possibly resulting in the execution of arbitrary code with
the privileges of the process or a Denial of Service condition.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All libarchive users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/libarchive-3.4.2"

References
=========
[ 1 ] CVE-2019-18408
      https://nvd.nist.gov/vuln/detail/CVE-2019-18408
[ 2 ] CVE-2020-9308
      https://nvd.nist.gov/vuln/detail/CVE-2020-9308

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

 https://security.gentoo.org/glsa/202003-28

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 2020 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/