id: springboot-heapdump

info:
  name: Spring Boot Actuator - Heap Dump Detection
  author: that_juan_,dwisiswant0,wdahlenb
  severity: critical
  description: |
    A Spring Boot Actuator heap dump was detected. A heap dump is a snapshot of JVM memory, which could expose environment variables and HTTP requests.
  reference:
    - https://github.com/pyn3rd/Spring-Boot-Vulnerability
  metadata:
    max-request: 3
  tags: springboot,exposure

variables:
  str: "{{rand_base(6)}}"

http:
  - raw:
      - |
        GET /{{str}} HTTP/1.1
        Host: {{Hostname}}

      - |
        GET /heapdump HTTP/1.1
        Host: {{Hostname}}

      - |
        GET /actuator/heapdump HTTP/1.1
        Host: {{Hostname}}

    max-size: 2097152 # 2MB - Max Size to read from server response
    matchers-condition: or
    matchers:
      - type: dsl
        dsl:
          - "!contains(hex_encode(body_1), '1f8b080000000000')"
          - "contains(hex_encode(body_2), '1f8b080000000000')"
        condition: and

      - type: dsl
        dsl:
          - "!contains(hex_encode(body_1), '1f8b080000000000')"
          - "contains(hex_encode(body_3), '1f8b080000000000')"
        condition: and

      - type: dsl
        dsl:
          - "contains(hex_encode(body_2), '4a4156412050524f46494c45') || contains(hex_encode(body_2), '4850524f46')"
          - "contains(hex_encode(body_3), '4a4156412050524f46494c45') || contains(hex_encode(body_3), '4850524f46')"
        condition: or