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Network Instruments Observer SNMP OID Processing Denial Of Service

Network Instruments Observer SNMP OID Processing Denial Of Service
Posted Jun 8, 2012
Authored by Dmitriy Pletnev | Site secunia.com

Secunia Research has discovered a vulnerability in Network Instruments Observer, which can be exploited by malicious people to cause a DoS (Denial of Service). The vulnerability is caused due to an error in the "CSnmp::ASN1_ReadObjIDValue()" method (NISNMP.DLL) when processing an Object Identifier (OID) within a variable binding list. This can be exploited to cause a limited stack-based buffer overflow and cause a crash only via e.g. a specially crafted SetRequest SNMP datagram. Observer version 15.1 Build 0007.0000 is affected.

tags | advisory, denial of service, overflow
advisories | CVE-2012-0274
MD5 | 409759421ffb449665a68945ab0a1c42

Network Instruments Observer SNMP OID Processing Denial Of Service

Change Mirror Download
======================================================================

Secunia Research 07/06/2012

- Network Instruments Observer -
- SNMP OID Processing Denial of Service Vulnerability -

======================================================================
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

======================================================================
1) Affected Software

* Observer version 15.1 Build 0007.0000

NOTE: Other versions may also be affected.

======================================================================
2) Severity

Rating: Less critical
Impact: DoS
Where: From local network

======================================================================
3) Vendor's Description of Software

"Our complete solution set not only provides the deepest drill-down
into network problems, it also provides back-in-time analysis,
reporting, trending, alarms, application tools, route monitoring,
and more."

Product Link:
http://www.networkinstruments.com/products/observer/index.html

======================================================================
4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Network Instruments
Observer, which can be exploited by malicious people to cause a DoS
(Denial of Service).

The vulnerability is caused due to an error in the
"CSnmp::ASN1_ReadObjIDValue()" method (NISNMP.DLL) when processing an
Object Identifier (OID) within a variable binding list. This can be
exploited to cause a limited stack-based buffer overflow and cause a
crash only via e.g. a specially crafted SetRequest SNMP datagram.

======================================================================
5) Solution

Restrict access to trusted hosts only.

======================================================================
6) Time Table

09/03/2012 - Requested security contact.
15/03/2012 - 2nd security contact request.
07/06/2012 - Public disclosure.

======================================================================
7) Credits

Discovered by Dmitriy Pletnev, Secunia Research.

======================================================================
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2012-0274 for the vulnerability.

======================================================================
9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:

http://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/corporate/jobs/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

======================================================================
10) Verification

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2012-20/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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

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