From: Secunia Security Advisories (sec-advsecunia.com)
Date: Thu Nov 11 2004 - 06:20:12 CST

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TITLE:
04WebServer Three Vulnerabilities

SECUNIA ADVISORY ID:
SA13159

VERIFY ADVISORY:
http://secunia.com/advisories/13159/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting, Manipulation of data, DoS

WHERE:
From remote

SOFTWARE:
04WebServer 1.x
http://secunia.com/product/4234/

DESCRIPTION:
Tan Chew Keong has discovered three vulnerabilities in 04WebServer,
which can be exploited by malicious people to conduct cross-site
scripting attacks, inject malicious spoofed requests in the web log,
and cause a DoS (Denial of Service).

1) Input passed to the default error page "Response_default.html"
isn't properly sanitised before being returned to the user. This can
be exploited to execute arbitrary HTML and script code in a user's
browser session in context of a vulnerable site.

2) HTTP requests are not properly sanitised before being written to
the web log. This can be exploited to inject malicious, spoofed
requests in the web log.

3) An input validation error when requesting DOS devices (e.g.
"COM1", "AUX", "PRN") in HTTP requests can cause the 04WebServer
service to fail restarting properly in some situations.

The vulnerabilities have been confirmed on version 1.42. Other
versions may also be affected.

SOLUTION:
Filter malicious characters and character sequences in a proxy
server.

Use another product.

PROVIDED AND/OR DISCOVERED BY:
Tan Chew Keong

ORIGINAL ADVISORY:
http://www.security.org.sg/vuln/04webserver142.html

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