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Gentoo: CUPS Denial of Service Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
Gentoo CUPS incorrectly handles partially-negotiated SSL connections allowing for a Denial of Service.
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Gentoo Linux Security Advisory                           GLSA 200703-28
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: CUPS: Denial of Service
      Date: March 31, 2007
      Bugs: #170881
        ID: 200703-28

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Synopsis
========

CUPS incorrectly handles partially-negotiated SSL connections allowing
for a Denial of Service.

Background
==========

CUPS provides a portable printing layer for UNIX-based operating
systems.

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

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  net-print/cups       < 1.2.9                             >= 1.2.9

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

CUPS does not properly handle partially-negotiated SSL connections.
Upon receiving a partially-negotiated SSL connection, CUPS no longer
accepts further incoming connections, as the initial connection never
times out.

Impact
======

An attacker could partially negotiate an SSL connection with a CUPS
server, and cause future connections to that server to fail, resulting
in a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All CUPS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-print/cups-1.2.9"

References
==========

  [ 1 ] CVE-2007-0720
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0720

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

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

  http://security.gentoo.org/glsa/glsa-200703-28.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 2007 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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