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vBulletin 4.x.x vB Optimise 2.6.3 Pro Open Redirection

vBulletin 4.x.x vB Optimise 2.6.3 Pro Open Redirection
Posted Mar 2, 2019
Authored by KingSkrupellos

vBulletin version 4.x.x with vB Optimise version 2.6.3 Pro suffers from an open redirection vulnerability.

tags | exploit
MD5 | 9054f179049a8a76de6336cccc044ee5

vBulletin 4.x.x vB Optimise 2.6.3 Pro Open Redirection

Change Mirror Download
####################################################################

# Exploit Title : vBulletin 4.x.x vB Optimise v2.6.3 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/vb-optimise.1/
# Software Affected Version : 2.6.3
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:vBulletin Optimisation provided by vB Optimise v2.6.3 (Pro)
# 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

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

# Description about Software :
***************************
vB Optimise is an extension to vBulletin which aims to improve resources by

eliminating MySQL queries commonly executed around your forum.

It supports multiple cache extensions available to the PHP language and additionally

supports the File System for those without any Cache Extensions installed.

vB Optimise can also integrate into other modifications to allow them to become

less server intensive so the features you love don't become problems within the future.

vB Optimise is intended to optimise vBulletin software by integrating several PHP "cachers"

and handling data before vBulletin. This works by encountering and handling data prior to

vBulletin in order to skip the arbitary execution that would be more server intensive.

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

# Impact :
*********
This web application vBulletin 4.x.x vB Optimise v2.6.3 Pro 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 :
*************************
/redirect-to/?redirect=https://www.[REDIRECTION-ADDRESS].gov

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

# Discovered By KingSkrupellos from Cyberizm.Org Digital Security Team

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