id: iis-shortname

info:
  name: IIS - Short Name Detect
  author: nodauf
  severity: info
  description: A website running via IIS on an old .net framework contains a get request vulnerability. Using the the tilde character "~" in the request, an attacker can locate short names of files and folders not normally visible.
  reference:
    - https://github.com/lijiejie/IIS_shortname_Scanner
    - https://www.exploit-db.com/exploits/19525
    - http://soroush.secproject.com/blog/2012/06/microsoft-iis-tilde-character-vulnerabilityfeature-short-filefolder-name-disclosure/
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
    cvss-score: 0.0
    cwe-id: CWE-200
  tags: fuzz,edb

requests:
  - raw:
      - |
        GET /N0t4xist*~1*/a.aspx HTTP/1.1
        Host: {{Hostname}}
        Origin: {{BaseURL}}
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8

      - |
        GET /*~1*/a.aspx' HTTP/1.1
        Host: {{Hostname}}
        Origin: {{BaseURL}}
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8

      - |
        OPTIONS /N0t4xist*~1*/a.aspx HTTP/1.1
        Host: {{Hostname}}
        Origin: {{BaseURL}}
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8

      - |
        OPTIONS /*~1*/a.aspx' HTTP/1.1
        Host: {{Hostname}}
        Origin: {{BaseURL}}
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8

    req-condition: true
    matchers:
      - type: dsl
        dsl:
          - "status_code_1!=404 && status_code_2 == 404 || status_code_3 != 404 && status_code_4 == 404"

# Enhanced by md on 2023/03/08