From: Secunia Security Advisories (sec-advsecunia.com)
Date: Tue Oct 05 2004 - 08:07:36 CDT

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TITLE:
NetworkActiv Web Server Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA12719

VERIFY ADVISORY:
http://secunia.com/advisories/12719/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
From remote

SOFTWARE:
NetworkActiv Web Server 1.x
http://secunia.com/product/4007/

DESCRIPTION:
Ziv Kamir has reported a vulnerability in NetworkActiv Web Server,
which can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to an input validation error when
handling HTTP requests. This can be exploited to cause a vulnerable
server to consume a large amount of CPU resources by sending an HTTP
GET request containing the URL encoded representation of the "%"
character (%25).

Example:
http://[victim]/%25

The vulnerability has been reported in version 1.0. Other versions
may also be affected.

SOLUTION:
Update to version 1.0 dated 2004-09-28 or later:
http://www.networkactiv.com/NetworkActivWebServerV1.0.exe

PROVIDED AND/OR DISCOVERED BY:
Ziv Kamir

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