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Secunia Research: Helix Server SNMP Master Agent Service Two Denial of Service Vulnerabilities
From: Secunia Research <remove-vuln () secunia com>
Date: Mon, 9 Apr 2012 09:32:50 +0200

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

                     Secunia Research 09/04/2012

            - RealNetworks Helix Server SNMP Master Agent -
               - Two Denial of Service Vulnerabilities -

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

* RealNetworks Helix Server version 14.2.0.212.

NOTE: Other versions may also be affected.

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

Rating: Less critical
Impact: Denial of Service
Where:  Local network

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

"Helix Server Standard delivers Flash, H.264, MPEG-4 (MP4), QuickTime,
MP3 and RealVideo content to PCs at the enterprise-level, and includes
features such as Flash Dynamic Streaming, Live Broadcasting,
Server-Side Playlists, Bookmarking, and Custom Logging and Multiple
Platform OS Support."

Product Link:
http://www.realnetworks.com/helix/

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

Secunia Research has discovered two vulnerabilities in RealNetworks
Helix Server, which can be exploited by malicious people to cause a
Denial of Service.

1) An error in the SNMP Master Agent process (master.exe) can be
exploited to terminate the service by establishing and immediately
closing a TCP connection on port 705.

2) An input validation error when processing the "DisplayString" of
SNMP object idenfiers can be exploited to cause an unhandled exception
and terminate the SNMP Master Agent service (master.exe) via a
specially crafted "Open-PDU" request sent to TCP port 705.

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

Update to version 14.3.x.

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

26/07/2011 - Vendor notified.
29/07/2011 - Vendor response.
09/04/2012 - Coordinated Disclosure.

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

Discovered by Dmitriy Pletnev, Secunia Research.

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

The Common Vulnerabilities and Exposures (CVE) project has not yet
assigned a CVE identifier for the vulnerabilities.

====================================================================== 
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/2012-9/

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

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


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