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vBulletin 4.2.5 Advanced User Tagging 3.1.3 Open Redirection

vBulletin 4.2.5 Advanced User Tagging 3.1.3 Open Redirection
Posted Mar 2, 2019
Authored by KingSkrupellos

vBulletin version 4.2.5 with Advanced User Tagging version 3.1.3 suffers from an open redirection vulnerability.

tags | exploit
MD5 | eddefb4f3e514fd69bce74aa04b9017a

vBulletin 4.2.5 Advanced User Tagging 3.1.3 Open Redirection

Change Mirror Download
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# Exploit Title : vBulletin 4.2.5 Advanced User Tagging v3.1.3 Pro Open Redirection
# Author [ Discovered By ] : KingSkrupellos
# Team : Cyberizm Digital Security Army
# Date : 02/03/2019
# Vendor Homepage : vbulletin.com ~ dragonbyte-tech.com
# Software Information Link : dragonbyte-tech.com/store/advanced-user-tagging.20/
ihax.fr/threads/advanced-application-forms-1-2-12.5493/
# Software Affected Version : 3.1.3 Pro and Lite / All previous versions
Compatible with vBulletin 3.8.x vBulletin 4.x.x
# Tested On : Windows and Linux
# Category : WebApps
# Exploit Risk : Medium
# Google Dorks :
intext:Powered by vBulletin(r) Version 4.2.5 - Advanced User Tagging v3.1.3 (Pro)
intext:User Alert System provided by Advanced User Tagging v3.1.3 (Pro) -
vBulletin Mods & Addons Copyright (c) 2019 DragonByte Technologies Ltd.
intext:vBulletin Skins by Bluepearl Skins
intext:Image resizer by SevenSkins
# 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 :
***************************
Advanced User Tagging is designed to increase activity on your forum by allowing

members to mention each other in posts when talking about them.

This is done in a very easy way, very similar to how Twitter mentions people.

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# Impact :
*********
This web application vBulletin 4.2.5 Advanced User Tagging v3.1.3 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.

#############################################################################

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

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

#############################################################################

# Discovered By KingSkrupellos from Cyberizm.Org Digital Security Team

#############################################################################

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