SILC Server: Denial of Service

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Gentoo Linux Security Advisory                          
GLSA 200703-12
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                                            http://security.gentoo.or
g/
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  Severity: Normal
     Title: SILC Server: Denial of Service
      Date: March 14, 2007
      Bugs: #169599
        ID: 200703-12

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Synopsis
========

SILC Server is affected by a Denial of Service
vulnerability.

Background
==========

SILC Server is a server for the Secure Internet Live
Conferencing
(SILC) protocol.

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

   
------------------------------------------------------------
-------
     Package             /  Vulnerable  /                  
Unaffected
   
------------------------------------------------------------
-------
  1  net-im/silc-server     < 1.0.2-r1                   
 >= 1.0.2-r1

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

Frank Benkstein discovered a possible NULL pointer
dereference in
apps/silcd/command.c if a new channel is created without
specifying a
valid hmac or cipher algorithm name.

Impact
======

A remote attacker could cause the server to crash, resulting
in a
Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All SILC Server users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
">=net-im/silc-server-1.0.2-r1"

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

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

  ht
tp://security.gentoo.org/glsa/glsa-200703-12.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
securitygentoo.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