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Gentoo Linux Security Advisory GLSA 200502-30
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http://security.gentoo.org/
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Severity: Low
Title: cmd5checkpw: Local password leak vulnerability
Date: February 25, 2005
Bugs: #78256
ID: 200502-30
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Synopsis
========
cmd5checkpw contains a flaw allowing local users to access other users
cmd5checkpw passwords.
Background
==========
cmd5checkpw is a checkpassword compatible authentication program that
uses CRAM-MD5 authentication mode.
Affected packages
=================
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Package / Vulnerable / Unaffected
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1 net-mail/cmd5checkpw <= 0.22-r1 >= 0.22-r2
Description
===========
Florian Westphal discovered that cmd5checkpw is installed setuid
cmd5checkpw but does not drop privileges before calling execvp(), so
the invoked program retains the cmd5checkpw euid.
Impact
======
Local users that know at least one valid /etc/poppasswd user/password
combination can read the /etc/poppasswd file.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All cmd5checkpw users should upgrade to the latest available version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/cmd5checkpw-0.22-r2"
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200502-30.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 2005 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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