vBulletin 4.2.5 Thread Post Bookmarking 1.2.0 Open Redirect

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# Exploit Title : vBulletin 4.2.5 Thread Post Bookmarking 1.2.0 Open Redirection
# Author [ Discovered By ] : KingSkrupellos
# Team : Cyberizm Digital Security Army
# Date : 04/03/2019
# Vendor Homepages : vbulletin.com ~ dragonbyte-tech.com
# Software Information Link : dragonbyte-tech.com/store/thread-post-bookmarking.141/
# Software Affected Version : 1.2.0
Compatible with vBulletin 3.8.x vBulletin 4.x.x
# Software Price Type : Paid Download
# Tested On : Windows and Linux
# Category : WebApps
# Exploit Risk : Medium
# Google Dorks : intext:Thread / Post Bookmarks provided by Thread / Post Bookmarking v1.2.0 (Free)
# Vulnerability Type : CWE-601 [ URL Redirection to Untrusted Site ('Open Redirect') ]
# PacketStormSecurity : packetstormsecurity.com/files/authors/13968
# CXSecurity : cxsecurity.com/author/KingSkrupellos/1/
# Exploit4Arab : exploit4arab.org/author/351/KingSkrupellos

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# Description about Software :
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Thread / Post Bookmarking from DragonByte Tech is a modification designed

to allow users to bookmark threads and posts for later perusal, quickly and easily.

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# Impact :
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This web application vBulletin 4.2.5 Thread Post Bookmarking 1.2.0 accepts a user-controlled

input that specifies a link to an external site, and uses that link in a Redirect.

This simplifies phishing attacks. An http parameter may contain a URL value and could cause

the web application to redirect the request to the specified URL. By modifying the URL value

to a malicious site, an attacker may successfully launch a phishing scam and steal user credentials.

Because the server name in the modified link is identical to the original site, phishing attempts

have a more trustworthy appearance.

Open redirect is a failure in that process that makes it possible for attackers to

steer users to malicious websites. This vulnerability is used in phishing attacks to get users

to visit malicious sites without realizing it. Web users often encounter redirection when they

visit the Web site of a company whose name has been changed or which has been acquired

by another company. Visiting unreal web page user's computer becomes affected by malware

the task of which is to deceive the valid actor and steal his personal data.

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# Open Redirection Exploit :
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/forum/redirect-to/?redirect=https://www.[REDIRECTION-ADDRESS].gov

/redirect-to/?redirect=https://www.[REDIRECTION-ADDRESS].gov

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# Example Vulnerable Sites :
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[+] autogeekonline.net/forum/redirect-to/?redirect=https://cxsecurity.com

[+] merchant-navy.net/forum/redirect-to/?redirect=https://cxsecurity.com

[+] mkiiisupra.net/bbs/redirect-to/?redirect=https://cxsecurity.com

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# Discovered By KingSkrupellos from Cyberizm.Org Digital Security Team

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