Microsoft SharePoint - Remote Code Execution

id: CVE-2020-16952

info:
  name: Microsoft SharePoint - Remote Code Execution
  author: dwisiswant0
  severity: high
  description: Microsoft SharePoint is vulnerable to a remote code execution when the software fails to check the source markup of an application package.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system, potentially leading to a complete compromise of the SharePoint server.
  remediation: |
    Apply the latest security updates provided by Microsoft to address this 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
    - https://nvd.nist.gov/vuln/detail/CVE-2020-16952
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
    cvss-score: 8.6
    cve-id: CVE-2020-16952
    cwe-id: CWE-346
    epss-score: 0.90125
    epss-percentile: 0.9872
    cpe: cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: microsoft
    product: sharepoint_enterprise_server
  tags: cve,cve2020,msf,sharepoint,iis,microsoft,ssi,rce

http:
  - 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
# digest: 4b0a00483046022100e0bdde1f10a3c7f9e1773ab527f8cb52ceb62bee9d4dd6c22904db572ee54ac9022100e7db923ffc75f38ed9852638743eae25f446b79004905c011578b05d3c7cfc47:922c64590222798bb761d5b6d8e72950