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Gentoo Linux Security Advisory GLSA 201801-10
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https://security.gentoo.org/
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Severity: Normal
Title: LibXfont, LibXfont2: Arbitrary file access
Date: January 08, 2018
Bugs: #639064
ID: 201801-10
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Synopsis
========
A vulnerability has been found in LibXfont and LibXfont2 which may
allow for arbitrary file access.
Background
==========
X.Org Xfont library.
Affected packages
=================
——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 x11-libs/libXfont < 1.5.4 >= 1.5.4
2 x11-libs/libXfont2 < 2.0.3 >= 2.0.3
——————————————————————-
2 affected packages
Description
===========
It was discovered that libXfont incorrectly followed symlinks when
opening font files.
Impact
======
A local unprivileged user could use this flaw to cause the X server to
access arbitrary files, including special device files.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All LibXfont users should upgrade to the latest version:
# emerge –sync
# emerge –ask –oneshot –verbose “>=x11-libs/libXfont-1.5.4”
All LibXfont2 users should upgrade to the latest version:
# emerge –sync
# emerge –ask –oneshot –verbose “>=x11-libs/libXfont2-2.0.3”
References
==========
[ 1 ] CVE-2017-16611
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-16611
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201801-10
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 2018 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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