VulnerabilityAnalyzed
CVE-2019-16759
vBulletin PHP Module Remote Code Execution Vulnerability
KEVCRITICAL 9.8EPSS 99.7%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.73% probability · 100th percentile
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022
- Weakness
- CWE-94
- Affected
- vbulletin/vbulletin
- Source
- cve@mitre.org
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2019-16759
References
- http://packetstormsecurity.com/files/154623/vBulletin-5.x-0-Day-Pre-Auth-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/154648/vBulletin-5.x-Pre-Auth-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155633/vBulletin-5.5.4-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158829/vBulletin-5.x-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158830/vBulletin-5.x-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158866/vBulletin-5.x-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Aug/5Exploit, Mailing List, Third Party Advisory
- https://arstechnica.com/information-technology/2019/09/public-exploit-code-spawns-mass-attacks-against-high-severity-vbulletin-bug/Exploit, Press/Media Coverage, Third Party Advisory
- https://seclists.org/fulldisclosure/2019/Sep/31Exploit, Mailing List, Third Party Advisory
- https://www.theregister.co.uk/2019/09/24/vbulletin_vbug_zeroday/Press/Media Coverage, Third Party Advisory
- http://packetstormsecurity.com/files/154623/vBulletin-5.x-0-Day-Pre-Auth-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/154648/vBulletin-5.x-Pre-Auth-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155633/vBulletin-5.5.4-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158829/vBulletin-5.x-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158830/vBulletin-5.x-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158866/vBulletin-5.x-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Aug/5Exploit, Mailing List, Third Party Advisory
- https://arstechnica.com/information-technology/2019/09/public-exploit-code-spawns-mass-attacks-against-high-severity-vbulletin-bug/Exploit, Press/Media Coverage, Third Party Advisory
- https://seclists.org/fulldisclosure/2019/Sep/31Exploit, Mailing List, Third Party Advisory
- https://www.theregister.co.uk/2019/09/24/vbulletin_vbug_zeroday/Press/Media Coverage, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16759US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.