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Gentoo Linux Security Advisory                           GLSA 201710-02
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: file: Stack-based buffer overflow
     Date: October 08, 2017
     Bugs: #629872
       ID: 201710-02

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Synopsis
========

A stack-based buffer overflow was found in file, possibly resulting in
the execution of 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                 < 5.32                     >= 5.32 

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

An issue discovered in file allows attackers to write 20 bytes to the
stack buffer via a specially crafted .notes section.

Impact
======

A remote attacker, by using a specially crafted .notes section in an
ELF binary, could execute arbitrary code or cause 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-5.32"

References
==========

[ 1 ] CVE-2017-1000249
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-1000249

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

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

 https://security.gentoo.org/glsa/201710-02

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 2017 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.

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