Home / mailings [gentoo-announce] [ GLSA 201710-16 ] Shadow: Buffer overflow
Posted on 15 October 2017
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Gentoo Linux Security Advisory GLSA 201710-16
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https://security.gentoo.org/
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Severity: Normal
Title: Shadow: Buffer overflow
Date: October 15, 2017
Bugs: #627044
ID: 201710-16
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Synopsis
========
A vulnerability found in Shadow may allow remote attackers to cause a
Denial of Service condition or produce other unspecified behaviors.
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 < 4.5 >= 4.5
Description
===========
Malformed input in the newusers tool may produce crashes and other
unspecified behaviors.
Impact
======
A remote attacker could possibly cause a Denial of Service condition or
bypass privilege boundaries in some web-hosting environments in which a
Control Panel allows an unprivileged user account to create
subaccounts.
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-4.5"
References
==========
[ 1 ] CVE-2017-12424
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-12424
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201710-16
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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