CVE-2021-20841: Ec cube/ec cube EC-CUBE Improper Access Control Vulnerability

MODERATE
Advisory Identifier: GHSA-jc55-crg7-pr35
Share
CVSS 6.5
CWE-863
Published
Advisory Summary

CVE-2021-20841 is a MODERATE (CVSS 6.5) ec-cube improper access control vulnerability (CWE-863: Incorrect Authorization) affecting Ec cube/ec cube libraries in the Packagist ecosystem. The issue involves ec-cube improper access control in management screen. Remediation is available by upgrading affected packages to version 2.17.2.

CVE-2021-20841 at a Glance

CVE Identifier CVE-2021-20841
GHSA Identifier GHSA-jc55-crg7-pr35
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-863: Incorrect Authorization
Affected Product Ec cube/ec cube
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

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

How to Fix CVE-2021-20841

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

ec-cube/ec-cube fixed: 2.17.2 
Upgrade ec-cube/ec-cube to 2.17.2
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 ec-cube/ec-cube

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-20841, inspect your project dependencies for Ec cube/ec cube:

inspect dependencies for ec-cube/ec-cube

Analyze the terminal output to locate any version of Ec cube/ec cube in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.17.2), 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Ec cube/ec cube, 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

Improper access control in Management screen of EC-CUBE 2 series 2.11.2 to 2.17.1 allows a remote authenticated attacker to bypass access restriction and to alter System settings via unspecified vectors.

CVE-2021-20841 Affected Ec cube/ec cube Versions

1 component(s)
Fixed Versions:
2.17.2
Product / Package Ecosystem Affected Versions Fixed Version
ec-cube/ec-cube
 Packagist
≥ 2.11.2
< 2.17.2
2.17.2

References

NVD — CVE-2021-20841 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20841
Ec cube/ec cube Source Repository REPOSITORY
https://github.com/EC-CUBE/ec-cube
jvn.jp/en/jp/jvn75444925/i... WEB
https://jvn.jp/en/jp/JVN75444925/index.html
www.ec-cube.net/info/weakness/20211... WEB
https://www.ec-cube.net/info/weakness/20211111

Frequently Asked Questions

What is CVE-2021-20841?
CVE-2021-20841 is a security vulnerability in Ec cube/ec cube involving EC-CUBE Improper access control in Management screen under CWE-863: Incorrect Authorization.
Which Ec cube/ec cube versions are affected?
Affected versions include releases prior to 2.17.2 across affected packages: ec-cube/ec-cube.
What version fixes CVE-2021-20841?
Upgrading to 2.17.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ec-cube/ec-cube affected?
Yes, ec-cube/ec-cube is affected in releases prior to 2.17.2. Upgrade your dependency to 2.17.2 or later.
What is the CVSS score of CVE-2021-20841?
CVE-2021-20841 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2021-20841?
CVE-2021-20841 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Packagist dependencies for CVE-2021-20841?
Run the dependency tree command: 'inspect dependencies for ec-cube/ec-cube'. 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-jc55-crg7-pr35",
  "modified" : "2024-04-25T20:40:45Z",
  "published" : "2021-11-25T00:00:38Z",
  "aliases" : [ "CVE-2021-20841" ],
  "summary" : "EC-CUBE Improper access control in Management screen",
  "details" : "Improper access control in Management screen of EC-CUBE 2 series 2.11.2 to 2.17.1 allows a remote authenticated attacker to bypass access restriction and to alter System settings via unspecified vectors.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ec-cube/ec-cube"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.11.2"
      }, {
        "fixed" : "2.17.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.17.1"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-20841"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/EC-CUBE/ec-cube"
  }, {
    "type" : "WEB",
    "url" : "https://jvn.jp/en/jp/JVN75444925/index.html"
  }, {
    "type" : "WEB",
    "url" : "https://www.ec-cube.net/info/weakness/20211111"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-25T20:40:45Z",
    "nvd_published_at" : "2021-11-24T16:15:00Z"
  }
}