Remote Command Execution in vBulletin 5.x by Invision Power Services
CVE-2019-16759

9.8CRITICAL

Key Information:

Vendor

Vbulletin

Status
Vbulletin
Vendor
CVE Published:
24 September 2019

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 94%🦅 CISA Reported

What is CVE-2019-16759?

The vulnerability allows attackers to execute arbitrary commands on the server by manipulating the 'widgetConfig[code]' parameter within AJAX requests to specific vBulletin routes. This exploitation can lead to significant control over the affected server, enabling unauthorized access and malicious activities.

CISA has reported CVE-2019-16759

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2019-16759 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply updates per vendor instructions.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2019-16759 - Proof of Concept

CVE-2019-16759
Created by jas502n

vbulletin5-rce
Created by theLSA

References

https://seclists.org/fulldisclosure/2019/Sep/31
x_refsource_MISC
https://www.theregister.co.uk/2019/09/24/vbulletin_vbug_z...
x_refsource_MISC
https://arstechnica.com/information-technology/2019/09/pu...
x_refsource_MISC

EPSS Score

94% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🦅

    CISA Reported

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.