Portcullis Security Advisory    07_010
 

Vulnerable System: 

SAP Internet Transaction Server

 
Vulnerability Title:  

Re-introduction of Cross-site Scripting/Cookie Theft Vulnerability.

Previous vendor Information:

Originally vendor contacted on 02.08.2003
Product: ITS, Version 6.20
Bugtraq ID: 8517
CVE: CAN-2003-0749


Vulnerability Discovery and Development: 

Portcullis Security Testing Services


Credit for Discovery

Andrew Davies of Portcullis Computer Security Ltd discovered this vulnerability.


Affected systems: 

Version 6200.1017.50954.0, Build 730827 (win32/IIS 5.0)

 
Details:

Object:
wgate.dll (win32 CGI-Communication Binary)

Description:
Insufficient input and output validation on miscellaneous userinput-parameters enables insertion of html/client side scripting tags.

Example:

HTTP-Requests:


http://example.com/scripts/wgate.dll?~service=--><img%09src=javascript:alert(xss);
or:
http://example.com/scripts/wgate/%22);alert('xss');alert(%22a/!

Impact:

Due to excessive usage of cookies for managing sessions and/or states cookie-theft is very likely.

Vendor Status:

Vendor advised and has stated that the solution and workaround are available through SAP note 1052053.


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