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Web Wiz Rich Text Editor Directory traversal + HTM/HTML file creation on the server
From: admin () bugreport ir
Date: Wed, 23 Jan 2008 11:06:27 +0330
########################## WwW.BugReport.ir ###########################################
# # AmnPardaz Security Research Team # # Title: Web Wiz Rich Text Editor(TM) # Vendor: http://www.webwizguide.com/ # Bug: Directory traversal + HTM/HTML file creation on the server # Vulnerable Version: 4.0 # Exploit: Available # Fix Available: No! Fast Solution is available. ################################################################################### #################### - Description: ####################Web Wiz Rich Text Editor (RTE) is a free WYSIWYG HTML Rich Text Editor that replaces standard textarea's with an advanced Word style HTMLarea.
#################### - Vulnerability: ####################Input passed to the FolderName parameter in "RTE_file_browser.asp" is 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. Moreover, by using "RTE_popup_save_file.asp" attacker can make his/her HTML or HTM file on the server, so this can be used in XSS attacks or making fake pages.
-POC:http://[WebWiz RTE]/RTE_file_browser.asp?look=save&sub=\.....\\\.....\\\.....\\\.....\\\.....\\\
http://[WebWiz RTE]/RTE_popup_save_file.asp #################### - Fast Solution : #################### 1- You can see below lines in "RTE_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) 2- Rename "RTE_popup_save_file.asp" till main solution by vendor #################### - Credit : #################### Original Advisory: http://www.bugreport.ir/?/31 AmnPardaz Security Research & Penetration Testing Group Contact: admin[4t}bugreport{d0t]ir WwW.BugReport.ir WwW.AmnPardaz.com
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- Web Wiz Rich Text Editor Directory traversal + HTM/HTML file creation on the server admin (Jan 23)