[NT] DeleGate Cross Site Scripting Vulnerability

From: support@securiteam.com
Date: 01/04/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Fri,  4 Jan 2002 18:14:18 +0100 (CET)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  DeleGate Cross Site Scripting Vulnerability
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SUMMARY

 <http://www.delegate.org/delegate/> DeleGate, a multifunctional Proxy
server program, contains a vulnerability related to a cross-site
scripting.

DETAILS

Vulnerable systems:
DeleGate version 7.7.1
DeleGate version 7.7.0

Immune systems:
DeleGate version 7.8.0

DeleGate, a multifunctional Proxy server program, is prone to a cross-site
scripting vulnerability under the following specific conditions:

 * When there is an URL that displays the error message "403 Forbidden"
 * When the administrator displays his/her own configured error message
using the MOUNT option

The configuration that complies with these conditions will result in
automatic execution of JavaScript code on the Web user's browser, if the
attacker makes the following link, and the user clicks it:
http://IP_Address_of_DeleGate/>alert("aaa");</script>

Solution:
This problem can be eliminated by upgrading to DeleGate/7.8.0, which is
available at the following URL:
 <http://www.delegate.org/delegate/> http://www.delegate.org/delegate/

ADDITIONAL INFORMATION

The information has been provided by <mailto:snsadv@lac.co.jp> Satoshi
ISHIZUKA (LAC) and <mailto:snsadv@lac.co.jp> Keigo YAMAZAKI (LAC).

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