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Gentoo Linux Security Advisory                           GLSA 202003-24
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: file: Heap-based buffer overflow
     Date: March 15, 2020
     Bugs: #698610
       ID: 202003-24

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Synopsis
========

A heap-based buffer overflow in file might allow remote attackers to
execute arbitrary code.

Background
==========

file is a utility that guesses a file format by scanning binary data
for patterns.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  sys-apps/file               < 5.37-r1                 >= 5.37-r1

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

It was discovered that file incorrectly handled certain malformed
files.

Impact
======

A remote attacker could entice a user to process a specially crafted
file via libmagic or file, possibly resulting in 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 file users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=sys-apps/file-5.37-r1"

References
==========

[ 1 ] CVE-2019-18218
      https://nvd.nist.gov/vuln/detail/CVE-2019-18218

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

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

 https://security.gentoo.org/glsa/202003-24

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