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Message-ID: <CHILKAT-MID-e5e03886-b6ad-481e-9f4e-20c88419ae34@SUS>
Date: Fri, 19 Nov 2004 15:21:37 -0500
From: lewk@...too.org
To: gentoo-announce@...too.org, bugtraq@...urityfocus.com,
full-disclosure@...ts.netsys.com, security-alerts@...uxsecurity.com
Subject: [ GLSA 200411-27 ] Fcron: Multiple vulnerabilities
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Gentoo Linux Security Advisory GLSA 200411-27
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http://security.gentoo.org/
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Severity: Normal
Title: Fcron: Multiple vulnerabilities
Date: November 18, 2004
Bugs: #71311
ID: 200411-27
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Synopsis
========
Multiple vulnerabilities in Fcron can allow a local user to potentially
cause a Denial of Service.
Background
==========
Fcron is a command scheduler with extended capabilities over cron and
anacron.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-apps/fcron <= 2.9.5 *>= 2.0.2
>= 2.9.5.1
Description
===========
Due to design errors in the fcronsighup program, Fcron may allow a
local user to bypass access restrictions (CAN-2004-1031), view the
contents of root owned files (CAN-2004-1030), remove arbitrary files or
create empty files (CAN-2004-1032), and send a SIGHUP to any process. A
vulnerability also exists in fcrontab which may allow local users to
view the contents of fcron.allow and fcron.deny (CAN-2004-1033).
Impact
======
A local attacker could exploit these vulnerabilities to perform a
Denial of Service on the system running Fcron.
Workaround
==========
Make sure the fcronsighup and fcrontab binaries are only executable by
trusted users.
Resolution
==========
All Fcron users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/fcron-2.0.2"
References
==========
[ 1 ] CAN-2004-1030
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1030
[ 2 ] CAN-2004-1031
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1031
[ 3 ] CAN-2004-1032
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1032
[ 4 ] CAN-2004-1033
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1033
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200411-27.xml
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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2004 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/2.0
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