Unauthenticated Stack Overflow in SNMPc

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                          ESB-2008.0448 -- [Win]
                  Unauthenticated Stack Overflow in SNMPc
                                1 May 2008

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Castle Rock Computing SNMPc Network Manager
Publisher:            NGSSoftware
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated

Original Bulletin:  
  http://www.ngssoftware.com/advisories/critical-vulnerability-in-snmpc/

- --------------------------BEGIN INCLUDED TEXT--------------------

=======
Summary
=======
Name: Unauthenticated Stack Overflow in SNMPc
Release Date: 30 April 2008
Reference: NGS00526
Discover: Wade Alcorn <wade@ngssoftware.com> and John Heasman 
<john@ngssoftware.com>
Vendor: Castle Rock Computing
Systems Affected: SNMPc versions 7.1 and earlier
Risk: Critical
Status: Published

===========
Description
===========
Wade Alcorn and John Heasman of NGSSoftware have discovered a stack 
overflow vulnerability in Castle Rock Computing SNMPc Network Manager. 
SNMPc Network Manger is a distributed network management system that 
allows monitoring of the network infrastructure. It employs a 
distributed polling agent architecture which uses SNMP TRAPs to provide 
a solution capable of monitoring networks with up to ten thousand 
devices. An SNMP TRAP initiated by a network element is sent to the 
SNMPc Network Manager to allow monitoring of the infrastructure.

=================
Technical Details
=================
The vulnerability can be exploited when an overly long community string 
is sent in the SNMP TRAP packet. The packets format will be valid ASN.1, 
including the length of the community string. An attacker can craft a 
single UDP packet that can lead to the execution of arbitrary code in 
the context of LocalSystem.

===============
Fix Information
===============
NGSSoftware wish to note that Castle Rock Computing were extremely 
pro-active in addressing this issue.

The latest version (SNMPc 7.1.1) can be downloaded from the Castle Rock 
Computing website: http://www.castlerock.com/.

NGSSoftware Insight Security Research
http://www.ngssoftware.com/
http://www.databasesecurity.com/
http://www.nextgenss.com/
+44(0)208 401 0070

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQCVAwUBSBkH9yh9+71yA2DNAQJCwwP/XYcxN7oRVah5RhqmxALGhyc85NEs/xKl
sBO/0hs1NSlGm6X0ub5kLXFYiRkSJ2gA9lefSyajmmu38we8P4DW4vNpdJI93y+5
Ef023fsy/XJLs7tZQAmKpDQRnDLxdE3Jndlx9epUBLbTlY8VbtHOC0xvzf4wZdGO
2huJJEdX9nE=
=yqZ+
-----END PGP SIGNATURE-----