CVE-2021-30657: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-4f6h-9vp6-5p6r
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CVSS 5.5
CWE-494 CWE-862
Published
Advisory Summary

CVE-2021-30657 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-494: Download of Code Without Integrity Check) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code.. Remediation is available in the latest vendor maintenance releases.

CVE-2021-30657 at a Glance

CVE Identifier CVE-2021-30657
GHSA Identifier GHSA-4f6h-9vp6-5p6r
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-494: Download of Code Without Integrity Check
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

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

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

How to Fix CVE-2021-30657

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

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

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-30657, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

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

Note: The mvn dependency:tree 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-494: Download of Code Without Integrity Check, where the product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code. In Software, 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 logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A malicious application may bypass Gatekeeper checks. Apple is aware of a report that this issue may have been actively exploited..

References

NVD — CVE-2021-30657 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30657
support.apple.com/en-us/ht212325 WEB
https://support.apple.com/en-us/HT212325
support.apple.com/en-us/ht212326 WEB
https://support.apple.com/en-us/HT212326
www.cisa.gov/known-exploited-vul... WEB
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30657

Frequently Asked Questions

What is CVE-2021-30657?
CVE-2021-30657 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-494: Download of Code Without Integrity Check.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2021-30657?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2021-30657?
CVE-2021-30657 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2021-30657?
CVE-2021-30657 is classified under CWE-494: Download of Code Without Integrity Check (The product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code.).
How can I check Maven dependencies for CVE-2021-30657?
Run the dependency tree command: 'mvn dependency:tree'. 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-4f6h-9vp6-5p6r",
  "modified" : "2025-10-22T00:32:19Z",
  "published" : "2022-05-24T19:13:30Z",
  "aliases" : [ "CVE-2021-30657" ],
  "details" : "A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A malicious application may bypass Gatekeeper checks. Apple is aware of a report that this issue may have been actively exploited..",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-30657"
  }, {
    "type" : "WEB",
    "url" : "https://support.apple.com/en-us/HT212325"
  }, {
    "type" : "WEB",
    "url" : "https://support.apple.com/en-us/HT212326"
  }, {
    "type" : "WEB",
    "url" : "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30657"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-494", "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2021-09-08T15:15:00Z"
  }
}