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- # 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
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- # Description about Software :
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- 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.
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- # Impact :
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- 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.
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- # Open Redirection Exploit :
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- /redirect-to/?redirect=https://www.[REDIRECTION-ADDRESS].gov
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- # Example Vulnerable Sites :
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- [+] forum.jokergaming.ir/redirect-to/?redirect=https://cxsecurity.com/
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- # Discovered By KingSkrupellos from Cyberizm.Org Digital Security Team
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