id: CVE-2017-7269

info:
  name: Windows Server 2003 & IIS 6.0 - Remote Code Execution
  author: thomas_from_offensity,geeknik
  severity: critical
  description: |
    Internet Information Services (IIS) 6.0 in Microsoft Windows Server 2003 R2 contains a buffer overflow vulnerability in the ScStoragePathFromUrl function in the WebDAV service that could allow remote attackers to execute arbitrary code via a long header beginning with "If <http://" in a PROPFIND request.
  reference:
    - https://blog.0patch.com/2017/03/0patching-immortal-cve-2017-7269.html
    - https://github.com/danigargu/explodingcan/blob/master/explodingcan.py
    - https://nvd.nist.gov/vuln/detail/CVE-2017-7269
    - https://github.com/edwardz246003/IIS_exploit
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2017-7269
    cwe-id: CWE-119
  tags: cve,cve2017,rce,windows,iis,kev
  metadata:
    max-request: 1

http:
  - method: OPTIONS
    path:
      - "{{BaseURL}}"

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "IIS/6.0"

      - type: dsl
        dsl:
          - regex("<DAV:sql>", dasl)    # lowercase header name: DASL
          - regex("[\d]+(,\s+[\d]+)?", dav)    # lowercase header name: DAV
          - regex(".*?PROPFIND", public)    # lowercase header name: Public
          - regex(".*?PROPFIND", allow)    # lowercase header name: Allow
        condition: or

      - type: status
        status:
          - 200