Home / mailings [gentoo-announce] [ GLSA 201805-09 ] Shadow: security bypass
Posted on 23 May 2018
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Gentoo Linux Security Advisory GLSA 201805-09
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https://security.gentoo.org/
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Severity: Normal
Title: Shadow: security bypass
Date: May 22, 2018
Bugs: #647790
ID: 201805-09
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Synopsis
========
A vulnerability found in Shadow may allow local attackers to bypass
security restrictions.
Background
==========
Shadow is a set of tools to deal with user accounts.
Affected packages
=================
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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-apps/shadow < 4.6 >= 4.6
Description
===========
A local attacker could possibly bypass security restrictions if an
administrator used "group blacklisting" to restrict access to file
system paths.
Impact
======
A local attacker could possibly bypass security restrictions.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All shadow users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.6"
References
==========
[ 1 ] CVE-2018-7169
https://nvd.nist.gov/vuln/detail/CVE-2018-7169
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201805-09
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.
https://creativecommons.org/licenses/by-sa/2.5
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