Home / mailings [gentoo-announce] [ GLSA 201709-05 ] chkrootkit: Local privilege escalation
Posted on 17 September 2017
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Gentoo Linux Security Advisory GLSA 201709-05
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https://security.gentoo.org/
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Severity: High
Title: chkrootkit: Local privilege escalation
Date: September 17, 2017
Bugs: #512356
ID: 201709-05
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Synopsis
========
A vulnerability in chkrootkit may allow local users to gain root
privileges.
Background
==========
chkrootkit is a tool to locally check for signs of a rootkit.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-forensics/chkrootkit
< 0.50 >= 0.50
Description
===========
When /tmp is mounted without the noexec option chkrootkit will execute
files in /tmp with root privileges.
Impact
======
A local attacker could possibly execute arbitrary code with root
privileges.
Workaround
==========
Users should mount /tmp with noexec option.
Resolution
==========
All chkrootkit users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-forensics/chkrootkit-0.50"
References
==========
[ 1 ] CVE-2014-0476
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0476
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201709-05
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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