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Web Wiz Forums <= 9.07 (sub) Remote Directory Traversal Vulnerability

Author
BugReport
Risk
[
Security Risk Unsored
]
0day-ID
0day-ID-2541
Category
web applications
Date add
23-01-2008
Platform
unsorted
=====================================================================
Web Wiz Forums <= 9.07 (sub) Remote Directory Traversal Vulnerability
=====================================================================



########################## WwW.BugReport.ir ###########################################
#
#      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.
###################################################################################


####################
- Description:
####################
Web Wiz Forums bulletin board system is the ideal forum package for your website's community. 

####################
- Vulnerability:
####################
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=\.....\\\.....\\\.....\\\


####################
- Fast Solution :
####################
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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