id: CVE-2020-2103

info:
  name: Diagnostic page exposed session cookies
  author: c-sh0
  severity: medium
  description: Jenkins 2.218 and earlier, LTS 2.204.1 and earlier exposed session identifiers on a users detail object in the whoAmI diagnostic page.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2020-2103
    - https://www.jenkins.io/security/advisory/2020-01-29/#SECURITY-1695
    - https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1695
    - http://www.openwall.com/lists/oss-security/2020/01/29/1
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 5.4
    cve-id: CVE-2020-2103
    cwe-id: CWE-200
  metadata:
    shodan-query: http.favicon.hash:81586312
  tags: cve,cve2020,jenkins

requests:
  - raw:
      - |
        GET {{BaseURL}}/whoAmI/ HTTP/1.1
        Host: {{Hostname}}

      - |
        GET {{BaseURL}}/whoAmI/ HTTP/1.1
        Host: {{Hostname}}

    cookie-reuse: true
    req-condition: true
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        part: header
        words:
          - 'text/html'
          - 'x-jenkins'
        condition: and
        case-insensitive: true

      - type: word
        part: body_2
        words:
          - 'Cookie'
          - 'SessionId: null'
        condition: and

    extractors:
      - type: kval
        kval:
          - x_jenkins