VDB-90678 · CVE-2016-6483 · EDB 40225

vBulletin 5.2.0/5.2.1/5.2.2 Media Upload server-side request forgery

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.1	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in vBulletin 5.2.0/5.2.1/5.2.2 (Forum Software). Affected is an unknown function of the component Media Upload. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 08/01/2016 by Dawid Golunski as http://www.vbulletin.com/forum/forum/vbulletin-announcements/vbulletin-announcements_aa/4349551-security-patch-vbulletin-5-2-0-5-2-1-5-2-2 as confirmed posting (Forum). The advisory is available at legalhackers.com. This vulnerability is traded as CVE-2016-6483 since 07/27/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept.

Upgrading to version 5.2.3 Release Candidate 3 eliminates this vulnerability. Applying the patch 5.2.0 Patch Level 3/5.2.1 Patch Level 1/5.2.2 Patch Level 1 is able to eliminate this problem. The bugfix is ready for download at members.vbulletin.com. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability. The posting contains the following remark:

vBulletin Cloud sites have already had this fix applied.

The vulnerability is also documented in the vulnerability database at Exploit-DB (40225).

Productinfo

Type

Forum Software

Name

vBulletin

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 8.1

VulDB Base Score: 8.6
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.6
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

OpenVAS ID: 103171
OpenVAS Name: vBulletin Preauth Server Side Request Forgery (SSRF) Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: vBulletin 5.2.3 Release Candidate 3
Patch: 5.2.0 Patch Level 3/5.2.1 Patch Level 1/5.2.2 Patch Level 1

Timelineinfo

07/27/2016 🔍
08/01/2016 +5 days 🔍
08/01/2016 +0 days 🔍
08/08/2016 +7 days 🔍
08/08/2016 +0 days 🔍
08/09/2016 +1 days 🔍
09/01/2016 +23 days 🔍
09/13/2022 +2203 days 🔍

Sourcesinfo

Advisory: http://www.vbulletin.com/forum/forum/vbulletin-announcements/vbulletin-announcements_aa/4349551-security-patch-vbulletin-5-2-0-5-2-1-5-2-2
Researcher: Dawid Golunski
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6483 (🔍)
SecurityTracker: 1036553
SecurityFocus: 92350 - vBulletin CVE-2016-6483 Server Side Request Forgery Security Bypass Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/09/2016 08:56
Updated: 09/13/2022 13:05
Changes: 08/09/2016 08:56 (65), 03/22/2019 14:30 (15), 09/13/2022 13:05 (3)
Complete: 🔍