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Insecure Library Loading
Moderately critical

Nortel IP Softphone 2050 Buffer Overflow Vulnerability

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Release Date:  2007-10-18    Last Update:  2008-03-06    Views:  9,298

Secunia Advisory SA27252

Where:

From local network

Impact:

DoS, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A vulnerability has been reported in Nortel IP Softphone 2050, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially to compromise a vulnerable system.

The vulnerability is caused due to boundary errors when processing invalid packets sent to the RTCP port. This can be exploited to cause a buffer overflow and crash the application via specially crafted packets.

Successful exploitation may allow execution of arbitrary code.


Solution:
Update to release R2.2 Upgrade Version 264 (see vendor advisory for further details).

Provided and/or discovered by:
Daniel Stirnimann and Cyrill Brunschwiler, Compass Security Network Computing AG

Original Advisory:
Nortel:
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=696882

Compass Security Network Computing AG:
http://www.csnc.ch/static/advisory/csnc/nortel_UNIStim_IP_softphone_buffer-overflow_v1.0.txt

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Nortel IP Softphone 2050 Buffer Overflow Vulnerability

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