Home / mailings [gentoo-announce] [ GLSA 200804-11 ] policyd-weight: Insecure temporary file creation
Posted on 11 April 2008
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Gentoo Linux Security Advisory GLSA 200804-11
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http://security.gentoo.org/
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Severity: Normal
Title: policyd-weight: Insecure temporary file creation
Date: April 11, 2008
Bugs: #214403
ID: 200804-11
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Synopsis
========
policyd-weight uses temporary files in an insecure manner, allowing for
a symlink attack.
Background
==========
policyd-weight is a Perl policy daemon for the Postfix MTA intended to
eliminate forged envelope senders and HELOs.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 mail-filter/policyd-weight < 0.1.14.17 >= 0.1.14.17
Description
===========
Chris Howells reported that policyd-weight creates and uses the
"/tmp/.policyd-weight/" directory in an insecure manner.
Impact
======
A local attacker could exploit this vulnerability to delete arbitrary
files or change the ownership to the "polw" user via symlink attacks.
Workaround
==========
Set "$LOCKPATH = '/var/run/policyd-weight/'" manually in
"/etc/policyd-weight.conf".
Resolution
==========
All policyd-weight users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot -v ">=mail-filter/policyd-weight-0.1.14.17"
This version changes the default path for sockets to
"/var/run/policyd-weight", which is only writable by a privileged user.
Users need to restart policyd-weight immediately after the upgrade due
to this change.
References
==========
[ 1 ] CVE-2008-1569
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1569
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200804-11.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@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2008 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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