[Full-disclosure] [ GLSA 200505-17 ] Qpopper: Multiple Vulnerabilities

[Sune Kloppenborg Jeppesen]

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Gentoo Linux Security Advisory                           GLSA 200505-17
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Qpopper: Multiple Vulnerabilities
      Date: May 23, 2005
      Bugs: #90622
        ID: 200505-17

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Synopsis
========

Qpopper contains two vulnerabilities allowing an attacker to overwrite
arbitrary files and create files with insecure permissions.

Background
==========

Qpopper is a widely used server for the POP3 protocol.

Affected packages
=================

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  net-mail/qpopper     < 4.0.5-r3                       >= 4.0.5-r3

Description
===========

Jens Steube discovered that Qpopper doesn't drop privileges to process
local files from normal users (CAN-2005-1151). The upstream developers
discovered that Qpopper can be forced to create group or world
writeable files (CAN-2005-1152).

Impact
======

A malicious local attacker could exploit Qpopper to overwrite arbitrary
files as root or create new files which are group or world writeable.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Qpopper users should upgrade to the latest available version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-mail/qpopper-4.0.5-r3"

References
==========

  [ 1 ] CAN-2005-1151
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1151
  [ 2 ] CAN-2005-1152
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1152

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200505-17.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 at 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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