Web Wiz Forums Directory traversal

[admin () bugreport ir]

########################## WwW.BugReport.ir  
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#
#      AmnPardaz Security Research Team
#
# Title: Web Wiz Forums(TM)
# Vendor: http://www.webwizguide.com/
# Bug: Directory traversal
# Vulnerable Version: 9.07
# Exploit: Available
# Fix Available: No! Fast Solution is available.
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- Description:
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Web Wiz Forums bulletin board system is the ideal forum package for  
your website's community.

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- Vulnerability:
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Input passed to the FolderName parameter in "RTE_file_browser.asp" and  
"file_browser.asp" are not properly sanitised before being used. This  
can be exploited to list directories, list txt and list zip files  
through directory traversal attacks.
Also, "RTE_file_browser.asp" does not check user's session and an  
unauthenticated attacker can perform this attack.

-POC:
http://[WebWiz Forum]/RTE_file_browser.asp?look=&sub=\.....\\\.....\\\.....\\\


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- Fast Solution :
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You can see below lines in "RTE_file_browser.asp" and "file_browser.asp"

        'Stip path tampering for security reasons
        strSubFolderName = Replace(strSubFolderName, "../", "", 1, -1, 1)
        strSubFolderName = Replace(strSubFolderName, "..\", "", 1, -1, 1)
        strSubFolderName = Replace(strSubFolderName, "./", "", 1, -1, 1)
        strSubFolderName = Replace(strSubFolderName, ".\", "", 1, -1, 1)

Only add this to them:
        strSubFolderName = Replace(strSubFolderName, "/", "\", 1, -1, 1)
        strSubFolderName = Replace(strSubFolderName, "\\", "\", 1, -1, 1)
        strSubFolderName = Replace(strSubFolderName, "..", "", 1, -1, 1)

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- Credit :
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Original Advisory: http://www.bugreport.ir/?/29
AmnPardaz Security Research & Penetration Testing Group
Contact: admin[4t}bugreport{d0t]ir
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