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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

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Vulnerability Assessment Details

iPlanet chunked encoding

Vulnerability Assessment Summary
Checks for the behavior of iPlanet

Detailed Explanation for this Vulnerability Assessment

This host is running the Sun One/iPlanet web server 4.1 or 6.0. This
web server contains an unchecked buffer in the 'Chunked Encoding'
processing routines. By issuing a malformed request to the web server,
a potential intruder can 'POST' extraneous data and cause the web
server process to execute arbitrary code. This permits the potential
intruder to gain access to this host.

Solution: The vendor has released Sun ONE web server 4.1 service
pack 11 and 6.0 service pack 4 to fix this issue. Please install the
latest service pack available from Sun's website at http://www.sun.com/

Network Security Threat Level: High

Networks Security ID: 5433

Vulnerability Assessment Copyright: This script is Copyright (C) 2002 Renaud Deraison

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