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Gentoo Linux Security Advisory                           GLSA 200502-30
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                                            https://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 userscmd5checkpw passwords.

Background
=========
cmd5checkpw is a checkpassword compatible authentication program that
uses CRAM-MD5 authentication mode.

Affected packages
================
    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  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:

  https://security.gentoo.org/glsa/200502-30

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
https://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.

https://creativecommons.org/licenses/by-sa/2.0/