CVE-2020-6578: Zencart/zencart Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-wxxx-2x6v-979f
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2020-6578 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Zencart/zencart libraries in the Packagist ecosystem. The issue involves reflected xss in zen cart before 1.5.7a. Remediation is available by upgrading affected packages to version 1.5.7a.

CVE-2020-6578 at a Glance

CVE Identifier CVE-2020-6578
GHSA Identifier GHSA-wxxx-2x6v-979f
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 Zencart/zencart
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-2020-6578

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

zencart/zencart fixed: 1.5.7a 
Upgrade zencart/zencart to 1.5.7a
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 zencart/zencart

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-6578, inspect your project dependencies for Zencart/zencart:

inspect dependencies for zencart/zencart

Analyze the terminal output to locate any version of Zencart/zencart in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5.7a), 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 Zencart/zencart, 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

Zen Cart 1.5.6d allows reflected XSS via the main_page parameter to `includes/templates/template_default/common/tpl_main_page.php` or `includes/templates/responsive_classic/common/tpl_main_page.php.`

CVE-2020-6578 Affected Zencart/zencart Versions

1 component(s)
Fixed Versions:
1.5.7a
Product / Package Ecosystem Affected Versions Fixed Version
zencart/zencart
 Packagist
< 1.5.7a
1.5.7a

References

NVD — CVE-2020-6578 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-6578
Security Fix Commit FIX COMMIT
https://github.com/zencart/zencart/commit/aa11e1e06c11b8a2940299a4bec0ac3dd95a7895
Zencart/zencart Security Information SECURITY
https://herolab.usd.de/security-advisories/usd-2019-0069

Frequently Asked Questions

What is CVE-2020-6578?
CVE-2020-6578 is a security vulnerability in Zencart/zencart involving Reflected XSS in Zen Cart before 1.5.7a under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Zencart/zencart versions are affected?
Affected versions include releases prior to 1.5.7a across affected packages: zencart/zencart.
What version fixes CVE-2020-6578?
Upgrading to 1.5.7a (or the latest patched release for your respective branch) resolves the vulnerability.
Is zencart/zencart affected?
Yes, zencart/zencart is affected in releases prior to 1.5.7a. Upgrade your dependency to 1.5.7a or later.
What is the CVSS score of CVE-2020-6578?
CVE-2020-6578 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-2020-6578?
CVE-2020-6578 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-2020-6578?
Run the dependency tree command: 'inspect dependencies for zencart/zencart'. 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-wxxx-2x6v-979f",
  "modified" : "2023-07-06T20:25:05Z",
  "published" : "2022-05-24T17:44:54Z",
  "aliases" : [ "CVE-2020-6578" ],
  "summary" : "Reflected XSS in Zen Cart before 1.5.7a",
  "details" : "Zen Cart 1.5.6d allows reflected XSS via the main_page parameter to `includes/templates/template_default/common/tpl_main_page.php` or `includes/templates/responsive_classic/common/tpl_main_page.php.`",
  "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" : "zencart/zencart"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5.7a"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-6578"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/zencart/zencart/commit/aa11e1e06c11b8a2940299a4bec0ac3dd95a7895"
  }, {
    "type" : "WEB",
    "url" : "https://herolab.usd.de/security-advisories/usd-2019-0069"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-06T20:25:05Z",
    "nvd_published_at" : "2021-03-19T04:15:00Z"
  }
}