id: CVE-2020-16952

info:
  name: Microsoft SharePoint Server-Side Include (SSI) and ViewState RCE
  author: dwisiswant0
  severity: high
  description: A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'.
  reference:
    - https://srcincite.io/pocs/cve-2020-16952.py.txt
    - https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16952
    - https://github.com/rapid7/metasploit-framework/blob/1a341ae93191ac5f6d8a9603aebb6b3a1f65f107/documentation/modules/exploit/windows/http/sharepoint_ssi_viewstate.md
  classification:
    cvss-metrics: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    cvss-score: 7.8
    cve-id: CVE-2020-16952
    cwe-id: CWE-346
  tags: cve,cve2020,sharepoint,iis,microsoft,ssi,rce

requests:
  - method: GET
    path:
      - "{{BaseURL}}"

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "15\\.0\\.0\\.(4571|5275|4351|5056)"
          - "16\\.0\\.0\\.(10337|10364|10366)"
          # - "16.0.10364.20001"
        condition: or

      - type: regex
        part: header
        regex:
          - "(?i)(Microsoftsharepointteamservices:)"

      - type: status
        status:
          - 200
          - 201
        condition: or