CVE-2019-16759 : vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

Published 2019-09-24 22:15:13

Updated 2021-07-21 11:39:24

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2019-16759

Vbulletin » Vbulletin
Versions from including (>=) 5.0.0 and up to, including, (<=) 5.5.4
cpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:*
Matching versions

CVE-2019-16759 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

vBulletin PHP Module Remote Code Execution Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA description:

The PHP module within vBulletin contains an unspecified vulnerability that allows for remote code execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2019-16759

Added on 2021-11-03 Action due date 2022-05-03

Exploit prediction scoring system (EPSS) score for CVE-2019-16759

EPSS FAQ

97.51%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 100 %

Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2019-16759

vBulletin widgetConfig RCE

Disclosure Date: 2019-09-23

First seen: 2020-04-26

exploit/multi/http/vbulletin_widgetconfig_rce

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring POST request.

More information

CVSS scores for CVE-2019-16759

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2019-16759

CWE-94 Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-16759

https://www.theregister.co.uk/2019/09/24/vbulletin_vbug_zeroday/

This vBulletin vBug is vBad: Zero-day exploit lets miscreants hijack vulnerable web forums • The Register
Press/Media Coverage;Third Party Advisory
http://seclists.org/fulldisclosure/2020/Aug/5

Full Disclosure: Remote Code Execution 0day in vBulletin 5.x
Exploit;Mailing List;Third Party Advisory
http://packetstormsecurity.com/files/158829/vBulletin-5.x-Remote-Code-Execution.html

vBulletin 5.x Remote Code Execution ≈ Packet Storm
Exploit;Third Party Advisory;VDB Entry
http://packetstormsecurity.com/files/155633/vBulletin-5.5.4-Remote-Command-Execution.html

vBulletin 5.5.4 Remote Command Execution ≈ Packet Storm
Exploit;Third Party Advisory;VDB Entry
https://arstechnica.com/information-technology/2019/09/public-exploit-code-spawns-mass-attacks-against-high-severity-vbulletin-bug/

High-severity vulnerability in vBulletin is being actively exploited | Ars Technica
Exploit;Press/Media Coverage;Third Party Advisory
http://packetstormsecurity.com/files/154623/vBulletin-5.x-0-Day-Pre-Auth-Remote-Command-Execution.html

vBulletin 5.x 0-Day Pre-Auth Remote Command Execution ≈ Packet Storm
Exploit;Third Party Advisory;VDB Entry
http://packetstormsecurity.com/files/158866/vBulletin-5.x-Remote-Code-Execution.html

vBulletin 5.x Remote Code Execution ≈ Packet Storm
Exploit;Third Party Advisory;VDB Entry
http://packetstormsecurity.com/files/154648/vBulletin-5.x-Pre-Auth-Remote-Code-Execution.html

vBulletin 5.x Pre-Auth Remote Code Execution ≈ Packet Storm
Exploit;Third Party Advisory;VDB Entry
http://packetstormsecurity.com/files/158830/vBulletin-5.x-Remote-Code-Execution.html

vBulletin 5.x Remote Code Execution ≈ Packet Storm
Exploit;Third Party Advisory;VDB Entry
https://seclists.org/fulldisclosure/2019/Sep/31

Full Disclosure: vBulletin 5.x 0day pre-auth RCE exploit
Exploit;Mailing List;Third Party Advisory

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Vulnerability Details : CVE-2019-16759