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Gentoo Linux Security Advisory                           GLSA 200711-11
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Nagios Plugins: Two buffer overflows
      Date: November 08, 2007
      Bugs: #196308, #194178
        ID: 200711-11

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Synopsis
========

Two buffer overflow vulnerabilities in the Nagios Plugins might allow
for remote execution of arbitrary code.

Background
==========

The Nagios Plugins are an official set of plugins for Nagios, an open
source host, service and network monitoring program.

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

    -------------------------------------------------------------------
     Package                      /   Vulnerable   /        Unaffected
    -------------------------------------------------------------------
  1  net-analyzer/nagios-plugins      < 1.4.10-r1         >= 1.4.10-r1

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

fabiodds reported a boundary checking error in the "check_snmp" plugin
when processing SNMP "GET" replies that could lead to a stack-based
buffer overflow (CVE-2007-5623). Nobuhiro Ban reported a boundary
checking error in the redir() function of the "check_http" plugin when
processing HTTP "Location:" header information which might lead to a
buffer overflow (CVE-2007-5198).

Impact
======

A remote attacker could exploit these vulnerabilities to execute
arbitrary code with the privileges of the user running Nagios or cause
a Denial of Service by (1) sending a specially crafted SNMP "GET" reply
to the Nagios daemon or (2) sending an overly long string in the
"Location:" header of an HTTP reply. Note that to exploit (2), the
malicious or compromised web server has to be configured in Nagios and
the "-f" (follow) option has to be enabled.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All users of the Nagios Plugins should upgrade to the latest version:

   # emerge --sync
   # emerge -av --oneshot ">=net-analyzer/nagios-plugins-1.4.10-r1"

References
==========

  [ 1 ] CVE-2007-5198
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5198
  [ 2 ] CVE-2007-5623
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5623

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

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

  http://security.gentoo.org/glsa/glsa-200711-11.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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