CVE-2021-20717: Ec cube/ec cube Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-c8mx-43cq-993w
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2021-20717 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Ec cube/ec cube libraries in the Packagist ecosystem. The issue involves ec-cube cross-site scripting vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2021-20717 at a Glance

CVE Identifier CVE-2021-20717
GHSA Identifier GHSA-c8mx-43cq-993w
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Ec cube/ec cube
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:C/C:L/I:L/A:N).

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

How to Fix CVE-2021-20717

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: Latest secure release 
Upgrade ec-cube/ec-cube to Latest secure release
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-2021-20717, 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 the patched release), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. 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 scripting vulnerability in EC-CUBE 4.0.0 to 4.0.5 allows a remote attacker to inject a specially crafted script in the specific input field of the EC web site which is created using EC-CUBE. As a result, it may lead to an arbitrary script execution on the administrator's web browser.

CVE-2021-20717 Affected Ec cube/ec cube Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
ec-cube/ec-cube
 Packagist
≥ 4.0.0
≤ 4.0.5

References

NVD — CVE-2021-20717 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20717
Ec cube/ec cube Source Repository REPOSITORY
https://github.com/EC-CUBE/ec-cube
jvn.jp/en/jp/jvn97554111/i... WEB
https://jvn.jp/en/jp/JVN97554111/index.html
www.ec-cube.net/news/detail.php WEB
https://www.ec-cube.net/news/detail.php?news_id=383
www.ec-cube.net/news/detail.php WEB
https://www.ec-cube.net/news/detail.php?news_id=384

Frequently Asked Questions

What is CVE-2021-20717?
CVE-2021-20717 is a security vulnerability in Ec cube/ec cube involving EC-CUBE Cross-site scripting vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Ec cube/ec cube versions are affected?
Affected versions include releases prior to current release patches across affected packages: ec-cube/ec-cube.
What version fixes CVE-2021-20717?
Upgrading to current release patches (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 Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-20717?
CVE-2021-20717 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2021-20717?
CVE-2021-20717 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2021-20717?
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-c8mx-43cq-993w",
  "modified" : "2024-04-25T20:40:12Z",
  "published" : "2022-05-24T19:01:56Z",
  "aliases" : [ "CVE-2021-20717" ],
  "summary" : "EC-CUBE Cross-site scripting vulnerability",
  "details" : "Cross-site scripting vulnerability in EC-CUBE 4.0.0 to 4.0.5 allows a remote attacker to inject a specially crafted script in the specific input field of the EC web site which is created using EC-CUBE. As a result, it may lead to an arbitrary script execution on the administrator's web browser.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ec-cube/ec-cube"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "last_affected" : "4.0.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-20717"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/EC-CUBE/ec-cube"
  }, {
    "type" : "WEB",
    "url" : "https://jvn.jp/en/jp/JVN97554111/index.html"
  }, {
    "type" : "WEB",
    "url" : "https://www.ec-cube.net/news/detail.php?news_id=383"
  }, {
    "type" : "WEB",
    "url" : "https://www.ec-cube.net/news/detail.php?news_id=384"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-25T20:40:12Z",
    "nvd_published_at" : "2021-05-10T10:15:00Z"
  }
}