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TUCoPS :: Phreaking General Information :: tb13039.htm

Nortel UNIStim IP Softphone Buffer-Overflow



Nortel UNIStim IP Softphone Buffer-Overflow
Nortel UNIStim IP Softphone Buffer-Overflow



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# COMPASS SECURITY ADVISORY http://www.csnc.ch/=0D 
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# Product: IP Softphone=0D
# Vendor:  Nortel=0D
# Subject: UNIStim IP Softphone Buffer-Overflow=0D
# Risk:    High=0D
# Effect:  Currently not exploitable=0D
# Author:  Cyrill Brunschwiler (cyrill.brunschwiler (at) csnc (dot) ch=0D
# Date:    October, 18th 2007=0D
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Introduction:=0D
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Flooding an UNIStim IP Softphone on the RTCP Port with garbage immediately results in a Microsoft Windows error message which is mostly caused by=0D
memory corruption (buffer overflow).=0D
This vulnerability may be exploitable to gain user privileges on the client workstation and execute malicious commands or code.=0D
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Nortel has noted this as:=0D
Title:  UNIStim IP Softphone - Potential Vulnerability Due to Buffer Overflow=0D
Number: 2007008382=0D
http://support.nortel.com/go/main.jsp?cscat=SECUREADVISORY=0D 
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Vulnerable:=0D
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IP Softphone 2050=0D
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Vulnerability Management:=0D
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June 2007:    Vulnerability found=0D
June 2007:    Nortel Security notified=0D
October 2007: Nortel Advisory available=0D
October 2007: Compass Security Information=0D
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Remediation:=0D
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According to Nortel the vulnerability is still under investigation.=0D
The Nortel advisory will be reissued if the investigation results in new prevention information.=0D
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Reference:=0D
http://www.csnc.ch/static/advisory/secadvisorylist.html 


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