Vulnerabilities > CVE-2020-12720 - Missing Authentication for Critical Function vulnerability in Vbulletin
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
vBulletin before 5.5.6pl1, 5.6.0 before 5.6.0pl1, and 5.6.1 before 5.6.1pl1 has incorrect access control.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Choosing a Message/Channel Identifier on a Public/Multicast Channel Attackers aware that more data is being fed into a multicast or public information distribution means can 'select' information bound only for another client, even if the distribution means itself forces users to authenticate in order to connect initially. Doing so allows the attacker to gain access to possibly privileged information, possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could change its identifier from a less privileged to more so privileged channel or command.
- Using Unpublished Web Service APIs An attacker searches for and invokes Web Services APIs that the target system designers did not intend to be publicly available. If these APIs fail to authenticate requests the attacker may be able to invoke services and/or gain privileges they are not authorized for.
- Manipulating Writeable Terminal Devices This attack exploits terminal devices that allow themselves to be written to by other users. The attacker sends command strings to the target terminal device hoping that the target user will hit enter and thereby execute the malicious command with their privileges. The attacker can send the results (such as copying /etc/passwd) to a known directory and collect once the attack has succeeded.
- Cross Site Request Forgery (aka Session Riding) An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.
Metasploit
description This module exploits a SQL injection vulnerability found in vBulletin 5.6.1 and earlier This module uses the getIndexableContent vulnerability to reset the administrators password, it then uses the administrators login information to achieve RCE on the target. This module has been tested successfully on VBulletin Version 5.6.1 on Ubuntu Linux distribution. id MSF:EXPLOIT/MULTI/HTTP/VBULLETIN_GETINDEXABLECONTENT last seen 2020-06-11 modified 2020-06-03 published 2020-05-23 references https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12720 reporter Rapid7 source https://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/multi/http/vbulletin_getindexablecontent.rb title vBulletin /ajax/api/content_infraction/getIndexableContent nodeid Parameter SQL Injection description This module exploits a SQL injection vulnerability found in vBulletin 5.x.x to dump the user table information or to dump all of the vBulletin tables (based on the selected options). This module has been tested successfully on VBulletin Version 5.6.1 on Ubuntu Linux. id MSF:AUXILIARY/GATHER/VBULLETIN_GETINDEXABLECONTENT_SQLI last seen 2020-06-11 modified 2020-06-03 published 2020-05-23 references https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12720 reporter Rapid7 source https://github.com/rapid7/metasploit-framework/blob/master//modules/auxiliary/gather/vbulletin_getindexablecontent_sqli.rb title vBulletin /ajax/api/content_infraction/getIndexableContent nodeid Parameter SQL Injection
Nessus
NASL family | CGI abuses |
NASL id | VBULLETIN_CVE-2020-12720_DIRECT.NASL |
description | The version of vBulletin running on the remote host is affected by an input-validation flaw in the content_infraction/getIndexableContent API that allows for SQL injection. This can be levereged by an attacker to obtain administrator privileges leading to remote code execution. |
last seen | 2020-06-10 |
modified | 2020-05-15 |
plugin id | 136613 |
published | 2020-05-15 |
reporter | This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. |
source | https://www.tenable.com/plugins/nessus/136613 |
title | vBulletin 'getIndexableContent' SQL Injection (direct check) |
code |
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Packetstorm
data source https://packetstormsecurity.com/files/download/157904/vbulletin_getindexablecontent.rb.txt id PACKETSTORM:157904 last seen 2020-06-03 published 2020-06-02 reporter Charles FOL source https://packetstormsecurity.com/files/157904/vBulletin-5.6.1-SQL-Injection.html title vBulletin 5.6.1 SQL Injection data source https://packetstormsecurity.com/files/download/157716/vbulletin561-sql.txt id PACKETSTORM:157716 last seen 2020-05-17 published 2020-05-15 reporter Photubias source https://packetstormsecurity.com/files/157716/vBulletin-5.6.1-SQL-Injection.html title vBulletin 5.6.1 SQL Injection
The Hacker News
id | THN:5D5DD3DDBE383EE75BB80DC87C54F2A1 |
last seen | 2020-05-11 |
modified | 2020-05-11 |
published | 2020-05-11 |
reporter | The Hacker News |
source | https://thehackernews.com/2020/05/vBulletin-access-vulnerability.html |
title | An Undisclosed Critical Vulnerability Affect vBulletin Forums — Patch Now |
Related news
References
- https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4440032-vbulletin-5-6-1-security-patch-level-1
- http://packetstormsecurity.com/files/157716/vBulletin-5.6.1-SQL-Injection.html
- http://packetstormsecurity.com/files/157904/vBulletin-5.6.1-SQL-Injection.html
- https://attackerkb.com/topics/RSDAFLik92/cve-2020-12720-vbulletin-incorrect-access-control