CVE-2021-37580: Shenyu admin Improper Authentication Vulnerability

CRITICAL
Advisory Identifier: GHSA-vpfp-5gwq-g533
Share
CVSS 9.8
CWE-287
Published
Advisory Summary

CVE-2021-37580 is a CRITICAL (CVSS 9.8) improper authentication vulnerability (CWE-287: Improper Authentication) affecting Shenyu admin libraries in the Maven ecosystem. The issue involves improper authentication in apache shenyu admin. Remediation is available by upgrading affected packages to version 2.4.1.

CVE-2021-37580 at a Glance

CVE Identifier CVE-2021-37580
GHSA Identifier GHSA-vpfp-5gwq-g533
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-287: Improper Authentication
Affected Product Shenyu admin
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2021-37580

To remediate this vulnerability, upgrade all affected Shenyu admin dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.shenyu:shenyu-admin fixed: 2.4.1 
<dependency>
    <groupId>org.apache.shenyu</groupId>
    <artifactId>shenyu-admin</artifactId>
    <version>2.4.1</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.shenyu

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-37580, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.shenyu

Analyze the terminal output to locate any version of Shenyu admin in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.4.1), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.shenyu command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. In Shenyu admin, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A flaw was found in Apache ShenYu Admin. The incorrect use of JWT in ShenyuAdminBootstrap allows an attacker to bypass authentication. This issue affected Apache ShenYu 2.3.0 and 2.4.0.

CVE-2021-37580 Affected Shenyu admin Versions

1 component(s)
Fixed Versions:
2.4.1
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.shenyu:shenyu-admin
maven/org.apache.shenyu/shenyu-admin
Maven
≥ 2.3.0
< 2.4.1
2.4.1

References

NVD — CVE-2021-37580 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-37580
Security Fix Commit FIX COMMIT
https://github.com/apache/shenyu/commit/f78adb26926ba53b4ec5c21f2cf7e931461d601d
Shenyu admin Source Repository REPOSITORY
https://github.com/apache/shenyu
Shenyu admin Release RELEASE
https://github.com/apache/shenyu/releases/tag/v2.4.1
lists.apache.org/thread/o15j25qwtpcw... WEB
https://lists.apache.org/thread/o15j25qwtpcw62k48xw1tnv48skh3zgb
Shenyu admin Security Information SECURITY
http://www.openwall.com/lists/oss-security/2021/11/16/1

Frequently Asked Questions

What is CVE-2021-37580?
CVE-2021-37580 is a security vulnerability in Shenyu admin involving Improper Authentication in Apache ShenYu Admin under CWE-287: Improper Authentication.
Which Shenyu admin versions are affected?
Affected versions include releases prior to 2.4.1 across affected packages: org.apache.shenyu:shenyu-admin.
What version fixes CVE-2021-37580?
Upgrading to 2.4.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is shenyu-admin affected?
Yes, org.apache.shenyu:shenyu-admin is affected in releases prior to 2.4.1. Upgrade your dependency to 2.4.1 or later.
What is the CVSS score of CVE-2021-37580?
CVE-2021-37580 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-37580?
CVE-2021-37580 is classified under CWE-287: Improper Authentication (When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.).
How can I check Maven dependencies for CVE-2021-37580?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.shenyu'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vpfp-5gwq-g533",
  "modified" : "2023-09-05T22:18:19Z",
  "published" : "2021-11-17T23:15:30Z",
  "aliases" : [ "CVE-2021-37580" ],
  "summary" : "Improper Authentication in Apache ShenYu Admin",
  "details" : "A flaw was found in Apache ShenYu Admin. The incorrect use of JWT in ShenyuAdminBootstrap allows an attacker to bypass authentication. This issue affected Apache ShenYu 2.3.0 and 2.4.0.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.shenyu:shenyu-admin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.3.0"
      }, {
        "fixed" : "2.4.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-37580"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/shenyu/commit/f78adb26926ba53b4ec5c21f2cf7e931461d601d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/shenyu"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/shenyu/releases/tag/v2.4.1"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/o15j25qwtpcw62k48xw1tnv48skh3zgb"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2021/11/16/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-11-17T22:31:03Z",
    "nvd_published_at" : "2021-11-16T10:15:00Z"
  }
}