CVE-2020-13674: Drupal/core Cross-Site Request Forgery Vulnerability

MODERATE
Advisory Identifier: GHSA-j586-cj67-vg4p
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CVSS 6.5
CWE-352
Published
Advisory Summary

CVE-2020-13674 is a MODERATE (CVSS 6.5) cross-site request forgery vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Drupal/core libraries in the Packagist ecosystem. The issue involves cross-site request forgery in drupal core. Remediation is available by upgrading affected packages to version 8.9.19, 9.1.13, 9.2.6.

CVE-2020-13674 at a Glance

CVE Identifier CVE-2020-13674
GHSA Identifier GHSA-j586-cj67-vg4p
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Drupal/core
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-2020-13674

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

drupal/core fixed: 8.9.19 
Upgrade drupal/core to 8.9.19
drupal/core fixed: 9.1.13 
Upgrade drupal/core to 9.1.13
drupal/core fixed: 9.2.6 
Upgrade drupal/core to 9.2.6
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 drupal/core

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-13674, inspect your project dependencies for Drupal/core:

inspect dependencies for drupal/core

Analyze the terminal output to locate any version of Drupal/core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.9.19), 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 Drupal/core, 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

The QuickEdit module does not properly validate access to routes, which could allow cross-site request forgery under some circumstances and lead to possible data integrity issues. Sites are only affected if the QuickEdit module (which comes with the Standard profile) is installed. Removing the "access in-place editing" permission from untrusted users will not fully mitigate the vulnerability.

CVE-2020-13674 Affected Drupal/core Versions

3 component(s)
Fixed Versions:
8.9.199.1.139.2.6
Product / Package Ecosystem Affected Versions Fixed Version
drupal/core
 Packagist
≥ 8.0.0
< 8.9.19
8.9.19
drupal/core
 Packagist
≥ 9.1.0
< 9.1.13
9.1.13
drupal/core
 Packagist
≥ 9.2.0
< 9.2.6
9.2.6

References

NVD — CVE-2020-13674 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-13674
Security Fix Commit FIX COMMIT
https://github.com/drupal/core/commit/20cd85db8198c63101bd050ea973b13f2f3edef6
Security Fix Commit FIX COMMIT
https://github.com/drupal/core/commit/6359b3ea5aacf85399285c522c6d787a218c897c
Security Fix Commit FIX COMMIT
https://github.com/drupal/core/commit/801910fcdfc14ee6120051089a2129e455186ad8
Drupal/core Source Repository REPOSITORY
https://github.com/drupal/core
www.drupal.org/sa-core-2021-007 WEB
https://www.drupal.org/sa-core-2021-007

Frequently Asked Questions

What is CVE-2020-13674?
CVE-2020-13674 is a security vulnerability in Drupal/core involving Cross-Site Request Forgery in Drupal core under CWE-352: Cross-Site Request Forgery (CSRF).
Which Drupal/core versions are affected?
Affected versions include releases prior to 8.9.19, 9.1.13, 9.2.6 across affected packages: drupal/core.
What version fixes CVE-2020-13674?
Upgrading to 8.9.19, 9.1.13, 9.2.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is drupal/core affected?
Yes, drupal/core is affected in releases prior to 8.9.19, 9.1.13, 9.2.6. Upgrade your dependency to 8.9.19, 9.1.13, 9.2.6 or later.
What is the CVSS score of CVE-2020-13674?
CVE-2020-13674 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-2020-13674?
CVE-2020-13674 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-2020-13674?
Run the dependency tree command: 'inspect dependencies for drupal/core'. 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-j586-cj67-vg4p",
  "modified" : "2022-02-23T19:23:39Z",
  "published" : "2022-02-12T00:00:47Z",
  "aliases" : [ "CVE-2020-13674" ],
  "summary" : "Cross-Site Request Forgery in Drupal core",
  "details" : "The QuickEdit module does not properly validate access to routes, which could allow cross-site request forgery under some circumstances and lead to possible data integrity issues. Sites are only affected if the QuickEdit module (which comes with the Standard profile) is installed. Removing the \"access in-place editing\" permission from untrusted users will not fully mitigate the vulnerability.",
  "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" : "drupal/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.9.19"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.1.0"
      }, {
        "fixed" : "9.1.13"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.2.0"
      }, {
        "fixed" : "9.2.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-13674"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/drupal/core/commit/20cd85db8198c63101bd050ea973b13f2f3edef6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/drupal/core/commit/6359b3ea5aacf85399285c522c6d787a218c897c"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/drupal/core/commit/801910fcdfc14ee6120051089a2129e455186ad8"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/drupal/core"
  }, {
    "type" : "WEB",
    "url" : "https://www.drupal.org/sa-core-2021-007"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-02-23T19:23:39Z",
    "nvd_published_at" : "2022-02-11T16:15:00Z"
  }
}