CVE-2021-20842: Ec cube/ec cube EC-CUBE Cross-site Request Forgery (CSRF) Vulnerability

MODERATE
Advisory Identifier: GHSA-m9hv-qmqh-33qh
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CVSS 6.5
CWE-352
Published
Advisory Summary

CVE-2021-20842 is a MODERATE (CVSS 6.5) ec-cube cross-site request forgery (csrf) vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Ec cube/ec cube libraries in the Packagist ecosystem. The issue involves ec-cube cross-site request forgery (csrf) vulnerability. Remediation is available by upgrading affected packages to version 2.17.2.

CVE-2021-20842 at a Glance

CVE Identifier CVE-2021-20842
GHSA Identifier GHSA-m9hv-qmqh-33qh
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
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:N/UI:R/S:U/C:N/I:H/A:N).

Attack Vector Network (AV:N)
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-2021-20842

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-2021-20842, 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. 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

Cross-site request forgery (CSRF) vulnerability in EC-CUBE 2 series 2.11.0 to 2.17.1 allows a remote attacker to hijack the authentication of Administrator and delete Administrator via a specially crafted web page.

CVE-2021-20842 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
≥ 2.11.0
< 2.17.2
2.17.2

References

NVD — CVE-2021-20842 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20842
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-2021-20842?
CVE-2021-20842 is a security vulnerability in Ec cube/ec cube involving EC-CUBE Cross-site request forgery (CSRF) vulnerability under CWE-352: Cross-Site Request Forgery (CSRF).
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-2021-20842?
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-2021-20842?
CVE-2021-20842 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2021-20842?
CVE-2021-20842 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2021-20842?
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-m9hv-qmqh-33qh",
  "modified" : "2024-04-25T20:40:40Z",
  "published" : "2022-05-24T19:21:18Z",
  "aliases" : [ "CVE-2021-20842" ],
  "summary" : "EC-CUBE Cross-site request forgery (CSRF) vulnerability",
  "details" : "Cross-site request forgery (CSRF) vulnerability in EC-CUBE 2 series 2.11.0 to 2.17.1 allows a remote attacker to hijack the authentication of Administrator and delete Administrator via a specially crafted web page.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ec-cube/ec-cube"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.11.0"
      }, {
        "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-2021-20842"
  }, {
    "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-352" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-25T20:40:40Z",
    "nvd_published_at" : "2021-11-24T16:15:00Z"
  }
}