[37257] in bugtraq
[ GLSA 200411-13 ] Portage, Gentoolkit: Temporary file vulnerabilities
daemon@ATHENA.MIT.EDU (Sune Kloppenborg Jeppesen)
Mon Nov 8 13:31:37 2004
From: Sune Kloppenborg Jeppesen <jaervosz@gentoo.org>
To: gentoo-announce@gentoo.org
Date: Sun, 7 Nov 2004 19:37:01 +0100
Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com,
security-alerts@linuxsecurity.com
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Gentoo Linux Security Advisory GLSA 200411-13:01
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http://security.gentoo.org/
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Severity: Normal
Title: Portage, Gentoolkit: Temporary file vulnerabilities
Date: November 07, 2004
Bugs: #68846, #69147
ID: 200411-13:01
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Synopsis
========
dispatch-conf (included in Portage) and qpkg (included in Gentoolkit)
are vulnerable to symlink attacks, potentially allowing a local user
to overwrite arbitrary files with the rights of the user running the
script.
Background
==========
Portage is Gentoo's package management tool. The dispatch-conf utility
allows for easy rollback of configuration file changes and automatic
updates of configurations files never modified by users. Gentoolkit is
a collection of Gentoo specific administration scripts, one of which is
the portage querying tool qpkg.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-apps/portage <= 2.0.51-r2 >= 2.0.51-r3
2 app-portage/gentoolkit <= 0.2.0_pre10 >= 0.2.0_pre10-r1
*>= 0.2.0_pre8-r1
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
dispatch-conf and qpkg use predictable filenames for temporary files.
Impact
======
A local attacker could create symbolic links in the temporary files
directory, pointing to a valid file somewhere on the filesystem. When
an affected script is called, this would result in the file to be
overwritten with the rights of the user running the dispatch-conf or
qpkg, which could be the root user.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Portage users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/portage-2.0.51-r3"
All Gentoolkit users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-portage/gentoolkit-0.2.0_pre8-r1"
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200411-13.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 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/1.0
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