CVE-2021-21031: Magento/project community edition Magento Insufficient Session Expiration Vulnerability

MODERATE
Advisory Identifier: GHSA-4h3p-63x6-vwg2
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CVSS 5.6
CWE-613
Published
Advisory Summary

CVE-2021-21031 is a MODERATE (CVSS 5.6) magento insufficient session expiration vulnerability (CWE-613: Insufficient Session Expiration) affecting Magento/project community edition libraries in the Packagist ecosystem. The issue involves magento insufficient session expiration. Remediation is available by upgrading affected packages to version 2.4.1-p1, 2.3.6.

CVE-2021-21031 at a Glance

CVE Identifier CVE-2021-21031
GHSA Identifier GHSA-4h3p-63x6-vwg2
Severity MODERATE
CVSS v3.1 Base Score 5.6
CWE Classification CWE-613: Insufficient Session Expiration
Affected Product Magento/project community edition
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.6

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

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

How to Fix CVE-2021-21031

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

magento/project-community-edition fixed: Latest secure release 
Upgrade magento/project-community-edition to Latest secure release
magento/community-edition fixed: 2.4.1-p1 
Upgrade magento/community-edition to 2.4.1-p1
magento/community-edition fixed: 2.3.6 
Upgrade magento/community-edition to 2.3.6
Verify Direct and Transitive Dependencies

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

inspect dependencies for magento/project-community-edition

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-21031, inspect your project dependencies for Magento/project community edition:

inspect dependencies for magento/project-community-edition

Analyze the terminal output to locate any version of Magento/project community edition 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-p1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-613: Insufficient Session Expiration, where according to wasc, "insufficient session expiration is when a web site permits an attacker to reuse old session credentials or session ids for authorization.". In Magento/project community edition, 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

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) do not adequately invalidate user sessions. Successful exploitation could lead to unauthorized access to restricted resources. Access to the admin console is not required for successful exploitation.

CVE-2021-21031 Affected Magento/project community edition Versions

3 component(s)
Fixed Versions:
2.4.1-p12.3.6
Product / Package Ecosystem Affected Versions Fixed Version
magento/project-community-edition
 Packagist
≤ 2.0.2
magento/community-edition
 Packagist
≥ 2.4.0
< 2.4.1-p1
2.4.1-p1
magento/community-edition
 Packagist
< 2.3.6
2.3.6

References

NVD — CVE-2021-21031 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21031
Magento/project community edition Source Repository REPOSITORY
https://github.com/magento/magento2
Magento/project community edition Security Information SECURITY
https://helpx.adobe.com/security/products/magento/apsb21-08.html

Frequently Asked Questions

What is CVE-2021-21031?
CVE-2021-21031 is a security vulnerability in Magento/project community edition involving Magento Insufficient Session Expiration under CWE-613: Insufficient Session Expiration.
Which Magento/project community edition versions are affected?
Affected versions include releases prior to 2.4.1-p1, 2.3.6 across affected packages: magento/project-community-edition, magento/community-edition.
What version fixes CVE-2021-21031?
Upgrading to 2.4.1-p1, 2.3.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is magento/project-community-edition affected?
Yes, magento/project-community-edition is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
Is magento/community-edition affected?
Yes, magento/community-edition is affected in releases prior to 2.4.1-p1, 2.3.6. Upgrade your dependency to 2.4.1-p1, 2.3.6 or later.
What is the CVSS score of CVE-2021-21031?
CVE-2021-21031 has a CVSS v3.1 base score of 5.6 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2021-21031?
CVE-2021-21031 is classified under CWE-613: Insufficient Session Expiration (According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.").
How can I check Packagist dependencies for CVE-2021-21031?
Run the dependency tree command: 'inspect dependencies for magento/project-community-edition'. 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-4h3p-63x6-vwg2",
  "modified" : "2025-02-10T20:57:37Z",
  "published" : "2022-05-24T17:41:57Z",
  "aliases" : [ "CVE-2021-21031" ],
  "summary" : "Magento Insufficient Session Expiration",
  "details" : "Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) do not adequately invalidate user sessions. Successful exploitation could lead to unauthorized access to restricted resources. Access to the admin console is not required for successful exploitation.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.4.0"
      }, {
        "fixed" : "2.4.1-p1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.3.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/project-community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-21031"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/magento/magento2"
  }, {
    "type" : "WEB",
    "url" : "https://helpx.adobe.com/security/products/magento/apsb21-08.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-613" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-10T18:21:01Z",
    "nvd_published_at" : "2021-02-11T20:15:00Z"
  }
}