CVE-2020-13665: Drupal/core Drupal Core Access Bypass Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-wxqp-jwc9-g39x
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CVSS 9.8
CWE-863
Published
Advisory Summary

CVE-2020-13665 is a CRITICAL (CVSS 9.8) drupal core access bypass vulnerability vulnerability (CWE-863: Incorrect Authorization) affecting Drupal/core libraries in the Packagist ecosystem. The issue involves drupal core access bypass vulnerability. Remediation is available by upgrading affected packages to version 8.8.8, 8.9.1, 9.0.1.

CVE-2020-13665 at a Glance

CVE Identifier CVE-2020-13665
GHSA Identifier GHSA-wxqp-jwc9-g39x
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-863: Incorrect Authorization
Affected Product Drupal/core
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:N/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2020-13665

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: 8.8.8 
Upgrade drupal/core to 8.8.8
drupal/core fixed: 8.9.1 
Upgrade drupal/core to 8.9.1
drupal/core fixed: 9.0.1 
Upgrade drupal/core to 9.0.1
drupal/drupal fixed: 8.8.8 
Upgrade drupal/drupal to 8.8.8
drupal/drupal fixed: 8.9.1 
Upgrade drupal/drupal to 8.9.1
drupal/drupal fixed: 9.0.1 
Upgrade drupal/drupal to 9.0.1
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-2020-13665, 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 8.8.8), 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. 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

Access bypass vulnerability in Drupal Core allows JSON:API when JSON:API is in read/write mode. Only sites that have the read_only set to FALSE under jsonapi.settings config are vulnerable. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.x versions prior to 9.0.1.

CVE-2020-13665 Affected Drupal/core Versions

6 component(s)
Fixed Versions:
8.8.88.9.19.0.1
Product / Package Ecosystem Affected Versions Fixed Version
drupal/core
 Packagist
≥ 8.8.0
< 8.8.8
8.8.8
drupal/core
 Packagist
≥ 8.9.0
< 8.9.1
8.9.1
drupal/core
 Packagist
≥ 9.0.0
< 9.0.1
9.0.1
drupal/drupal
 Packagist
≥ 8.8.0
< 8.8.8
8.8.8
drupal/drupal
 Packagist
≥ 8.9.0
< 8.9.1
8.9.1
drupal/drupal
 Packagist
≥ 9.0.0
< 9.0.1
9.0.1

References

NVD — CVE-2020-13665 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-13665
Drupal/core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13665.yaml
Drupal/core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13665.yaml
Drupal/core Source Repository REPOSITORY
https://github.com/drupal/core
www.drupal.org/sa-core-2020-006 WEB
https://www.drupal.org/sa-core-2020-006

Frequently Asked Questions

What is CVE-2020-13665?
CVE-2020-13665 is a security vulnerability in Drupal/core involving Drupal Core Access bypass vulnerability under CWE-863: Incorrect Authorization.
Which Drupal/core versions are affected?
Affected versions include releases prior to 8.8.8, 8.9.1, 9.0.1 across affected packages: drupal/core, drupal/drupal.
What version fixes CVE-2020-13665?
Upgrading to 8.8.8, 8.9.1, 9.0.1 (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 8.8.8, 8.9.1, 9.0.1. Upgrade your dependency to 8.8.8, 8.9.1, 9.0.1 or later.
Is drupal/drupal affected?
Yes, drupal/drupal is affected in releases prior to 8.8.8, 8.9.1, 9.0.1. Upgrade your dependency to 8.8.8, 8.9.1, 9.0.1 or later.
What is the CVSS score of CVE-2020-13665?
CVE-2020-13665 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-13665?
CVE-2020-13665 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Packagist dependencies for CVE-2020-13665?
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-wxqp-jwc9-g39x",
  "modified" : "2024-04-23T22:30:43Z",
  "published" : "2022-05-24T17:49:27Z",
  "aliases" : [ "CVE-2020-13665" ],
  "summary" : "Drupal Core Access bypass vulnerability",
  "details" : "Access bypass vulnerability in Drupal Core allows JSON:API when JSON:API is in read/write mode. Only sites that have the read_only set to FALSE under jsonapi.settings config are vulnerable. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.x versions prior to 9.0.1.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.8.0"
      }, {
        "fixed" : "8.8.8"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.9.0"
      }, {
        "fixed" : "8.9.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "fixed" : "9.0.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/drupal"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.8.0"
      }, {
        "fixed" : "8.8.8"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/drupal"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.9.0"
      }, {
        "fixed" : "8.9.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/drupal"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "fixed" : "9.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-13665"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13665.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13665.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/drupal/core"
  }, {
    "type" : "WEB",
    "url" : "https://www.drupal.org/sa-core-2020-006"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-23T22:30:43Z",
    "nvd_published_at" : "2021-05-05T15:15:00Z"
  }
}