[ GLSA 200711-31 ] Net-SNMP: Denial of Service

[Pierre-Yves Rofes <py () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200711-31
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Net-SNMP: Denial of Service
      Date: November 20, 2007
      Bugs: #198346
        ID: 200711-31

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Synopsis
========

A Denial of Service vulnerability has been discovered in Net-SNMP when
processing GETBULK requests.

Background
==========

Net-SNMP is a collection of tools for generating and retrieving SNMP
data.

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

    -------------------------------------------------------------------
     Package                /  Vulnerable  /                Unaffected
    -------------------------------------------------------------------
  1  net-analyzer/net-snmp     < 5.4.1-r1                  >= 5.4.1-r1

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

The SNMP agent (snmpd) does not properly handle GETBULK requests with
an overly large "max-repetitions" field.

Impact
======

A remote unauthenticated attacker could send a specially crafted SNMP
request to the vulnerable application, possibly resulting in a high CPU
and memory consumption.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Net-SNMP users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-analyzer/net-snmp-5.4.1-r1"

References
==========

  [ 1 ] CVE-2007-5846
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5846

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

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

  http://security.gentoo.org/glsa/glsa-200711-31.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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