CVE-2019-7938: Magento/community edition Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-mgfr-44wv-hqv6
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CVSS 4.8
CWE-79
Published
Advisory Summary

CVE-2019-7938 is a MODERATE (CVSS 4.8) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Magento/community edition libraries in the Packagist ecosystem. The issue involves magento 2 community edition xss vulnerability. Remediation is available by upgrading affected packages to version 2.1.18, 2.2.9, 2.3.2, 1.9.4.2, 1.14.4.2.

CVE-2019-7938 at a Glance

CVE Identifier CVE-2019-7938
GHSA Identifier GHSA-mgfr-44wv-hqv6
Severity MODERATE
CVSS v3.1 Base Score 4.8
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Magento/community edition
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 4.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
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-2019-7938

To remediate this vulnerability, upgrade all affected Magento/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/community-edition fixed: 2.1.18 
Upgrade magento/community-edition to 2.1.18
magento/community-edition fixed: 2.2.9 
Upgrade magento/community-edition to 2.2.9
magento/community-edition fixed: 2.3.2 
Upgrade magento/community-edition to 2.3.2
magento/magento1ce fixed: 1.9.4.2 
Upgrade magento/magento1ce to 1.9.4.2
magento/magento1ee fixed: 1.14.4.2 
Upgrade magento/magento1ee to 1.14.4.2
magento/product-community-edition fixed: 2.1.18 
Upgrade magento/product-community-edition to 2.1.18
magento/product-community-edition fixed: 2.2.9 
Upgrade magento/product-community-edition to 2.2.9
magento/product-community-edition fixed: 2.3.2 
Upgrade magento/product-community-edition to 2.3.2
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 magento/community-edition

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-7938, inspect your project dependencies for Magento/community edition:

inspect dependencies for magento/community-edition

Analyze the terminal output to locate any version of Magento/community edition in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.18), 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 Magento/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

A stored cross-site scripting vulnerability exists in the admin panel of Magento Open Source prior to 1.9.4.2, and Magento Commerce prior to 1.14.4.2, Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2. This could be exploited by an authenticated user with privileges to modify catalog price rules to inject malicious javascript.

CVE-2019-7938 Affected Magento/community edition Versions

8 component(s)
Fixed Versions:
2.1.182.2.92.3.21.9.4.21.14.4.2
Product / Package Ecosystem Affected Versions Fixed Version
magento/community-edition
 Packagist
≥ 2.1.0
< 2.1.18
2.1.18
magento/community-edition
 Packagist
≥ 2.2.0
< 2.2.9
2.2.9
magento/community-edition
 Packagist
≥ 2.3.0
< 2.3.2
2.3.2
magento/magento1ce
 Packagist
≥ 1
< 1.9.4.2
1.9.4.2
magento/magento1ee
 Packagist
≥ 1
< 1.14.4.2
1.14.4.2
magento/product-community-edition
 Packagist
≥ 2.1
< 2.1.18
2.1.18
magento/product-community-edition
 Packagist
≥ 2.2
< 2.2.9
2.2.9
magento/product-community-edition
 Packagist
≥ 2.3
< 2.3.2
2.3.2

References

NVD — CVE-2019-7938 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-7938
Magento/community edition Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/magento/magento1ce/CVE-2019-7938.yaml
Magento/community edition Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/magento/magento1ee/CVE-2019-7938.yaml
Magento/community edition Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/magento/product-community-edition/CVE-2019-7938.yaml
Magento/community edition Source Repository REPOSITORY
https://github.com/magento/magento2
Magento/community edition Security Information SECURITY
https://magento.com/security/patches/magento-2.3.2-2.2.9-and-2.1.18-security-update-23
Magento/community edition Security Information SECURITY
https://web.archive.org/web/20220121051916/https://magento.com/security/patches/magento-2.3.2-2.2.9-and-2.1.18-security-update-23

Frequently Asked Questions

What is CVE-2019-7938?
CVE-2019-7938 is a security vulnerability in Magento/community edition involving Magento 2 Community Edition XSS Vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Magento/community edition versions are affected?
Affected versions include releases prior to 2.1.18, 2.2.9, 2.3.2, 1.9.4.2, 1.14.4.2 across affected packages: magento/community-edition, magento/magento1ce, magento/magento1ee, magento/product-community-edition.
What version fixes CVE-2019-7938?
Upgrading to 2.1.18, 2.2.9, 2.3.2, 1.9.4.2, 1.14.4.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is magento/community-edition affected?
Yes, magento/community-edition is affected in releases prior to 2.1.18, 2.2.9, 2.3.2. Upgrade your dependency to 2.1.18, 2.2.9, 2.3.2 or later.
Is magento/magento1ce affected?
Yes, magento/magento1ce is affected in releases prior to 1.9.4.2. Upgrade your dependency to 1.9.4.2 or later.
What is the CVSS score of CVE-2019-7938?
CVE-2019-7938 has a CVSS v3.1 base score of 4.8 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2019-7938?
CVE-2019-7938 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-2019-7938?
Run the dependency tree command: 'inspect dependencies for magento/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-mgfr-44wv-hqv6",
  "modified" : "2024-02-12T11:21:11Z",
  "published" : "2022-05-24T16:52:28Z",
  "aliases" : [ "CVE-2019-7938" ],
  "summary" : "Magento 2 Community Edition XSS Vulnerability",
  "details" : "A stored cross-site scripting vulnerability exists in the admin panel of Magento Open Source prior to 1.9.4.2, and Magento Commerce prior to 1.14.4.2, Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2. This could be exploited by an authenticated user with privileges to modify catalog price rules to inject malicious javascript.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.1.0"
      }, {
        "fixed" : "2.1.18"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.2.0"
      }, {
        "fixed" : "2.2.9"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.3.0"
      }, {
        "fixed" : "2.3.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/magento1ce"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1"
      }, {
        "fixed" : "1.9.4.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/magento1ee"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1"
      }, {
        "fixed" : "1.14.4.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/product-community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.1"
      }, {
        "fixed" : "2.1.18"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/product-community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.2"
      }, {
        "fixed" : "2.2.9"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/product-community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.3"
      }, {
        "fixed" : "2.3.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-7938"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/magento/magento1ce/CVE-2019-7938.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/magento/magento1ee/CVE-2019-7938.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/magento/product-community-edition/CVE-2019-7938.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/magento/magento2"
  }, {
    "type" : "WEB",
    "url" : "https://magento.com/security/patches/magento-2.3.2-2.2.9-and-2.1.18-security-update-23"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20220121051916/https://magento.com/security/patches/magento-2.3.2-2.2.9-and-2.1.18-security-update-23"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-14T23:09:44Z",
    "nvd_published_at" : "2019-08-02T22:15:00Z"
  }
}