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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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