Secunia Research: Network Instruments Observer SNMP OID Processing Denial of Service

Secunia Research Denial of Service Table of Contents Network Instruments Object Identifier mailing list security community system configuration vulnerability management database as a service solutions Time Table Description of Vulnerability About Secunia Description of Software verify Affected Software Product Link Secunia Security Advisories Service Vulnerability

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                     Secunia Research 07/06/2012

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

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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

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1) Affected Software 

* Observer version 15.1 Build 0007.0000

NOTE: Other versions may also be affected.

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2) Severity 

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

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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

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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.

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5) Solution 

Restrict access to trusted hosts only.

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6) Time Table 

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

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7) Credits 

Discovered by Dmitriy Pletnev, Secunia Research.

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8) References

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

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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/

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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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