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From: Thomas Deutschmann <whissi@gentoo.org>
Reply-To: security@gentoo.org
To: gentoo-announce@lists.gentoo.org
Message-ID: <e22424a4-8776-2b26-f779-9a993b486dc1@gentoo.org>
Subject: [ GLSA 201707-08 ] feh: Arbitrary remote code execution

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Gentoo Linux Security Advisory                           GLSA 201707-08
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: feh: Arbitrary remote code execution
     Date: July 08, 2017
     Bugs: #616470
       ID: 201707-08

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Synopsis
========

A vulnerability in feh might allow remote attackers to execute
arbitrary code.

Background
==========

feh is an X11 image viewer aimed mostly at console users.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  media-gfx/feh               < 2.18.3                 >= 2.18.3

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

Tobias Stoeckmann discovered it was possible to trigger an
out-of-boundary heap write with the image viewer feh while receiving an
IPC message.

Impact
======

A remote attacker, pretending to be the E17 window manager, could
possibly trigger an out-of-boundary heap write in feh while receiving
an IPC message.  This could result 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 feh users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-gfx/feh-2.18.3"

References
==========

[ 1 ] CVE-2017-7875
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-7875

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

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

 https://security.gentoo.org/glsa/201707-08

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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