Remote Command Execution Vulnerability in vBulletin by Internet Brands
CVE-2020-17496

9.8CRITICAL

Key Information:

Vendor

Vbulletin

Status
Vbulletin
Vendor
CVE Published:
12 August 2020

Badges

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

What is CVE-2020-17496?

vBulletin versions 5.5.4 to 5.6.2 contain a vulnerability that allows attackers to execute arbitrary commands remotely. This issue arises from insufficient fixes for a previously reported vulnerability, CVE-2019-16759, which permits crafted subWidgets data to be sent through an ajax/render/widget_tabbedcontainer_tab_panel request. This flaw can be exploited to achieve unauthorized access to system commands, posing significant risks to the integrity and confidentiality of affected systems.

CISA has reported CVE-2020-17496

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-2020-17496 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-2020-17496 - Proof of Concept

vBulletin_5.x-tab_panel-RCE
Created by ludy-dev

CVE-2020-17496
Created by ctlyz123

References

https://cwe.mitre.org/data/definitions/78.html
x_refsource_MISC
https://blog.exploitee.rs/2020/exploiting-vbulletin-a-tal...
x_refsource_MISC
https://forum.vbulletin.com/forum/vbulletin-announcements...
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

.