Date: Tue, 28 Nov 2006 20:54:39 +0100
From: Raphael Marichez <falco@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200611-23 ] Mono: Insecure temporary file creation
Message-ID: <20061128195439.GA24555@falco.falcal.net.>
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Organization: Gentoo Linux Security Team
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Gentoo Linux Security Advisory GLSA 200611-23
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http://security.gentoo.org/
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Severity: Normal
Title: Mono: Insecure temporary file creation
Date: November 28, 2006
Bugs: #150264
ID: 200611-23
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Synopsis
========
Mono is vulnerable to linking attacks, potentially allowing a local
user to overwrite arbitrary files.
Background
==========
Mono provides the necessary software to develop and run .NET client and
server applications.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-lang/mono < 1.1.13.8.1 >= 1.1.13.8.1
Description
===========
Sebastian Krahmer of the SuSE Security Team discovered that the
System.CodeDom.Compiler classes of Mono create temporary files with
insecure permissions.
Impact
======
A local attacker could create links in the temporary file directory,
pointing to a valid file somewhere on the filesystem. When an affected
class is called, this could result in the file being overwritten with
the rights of the user running the script.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Mono users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/mono-1.1.13.8.1"
References
==========
[ 1 ] CVE-2006-5072
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5072
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200611-23.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 2006 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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