CVE-2020-13668: Drupal/core Cross-Site Scripting Vulnerability
MODERATECVE-2020-13668 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Drupal/core libraries in the Packagist ecosystem. The issue involves cross-site scripting in drupal core. Remediation is available by upgrading affected packages to version 8.8.10, 8.9.6, 9.0.6.
CVE-2020-13668 at a Glance
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).
How to Fix CVE-2020-13668
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.
Upgrade drupal/core to 8.8.10Upgrade drupal/core to 8.9.6Upgrade drupal/core to 9.0.6Upgrade drupal/drupal to 8.8.10Upgrade drupal/drupal to 8.9.6Upgrade drupal/drupal to 9.0.6Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for drupal/coreHow to Check if You Are Affected
To determine whether your application is affected by CVE-2020-13668, inspect your project dependencies for Drupal/core:
inspect dependencies for drupal/coreAnalyze 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 8.8.10), 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 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
CVE-2020-13668 Affected Drupal/core Versions
6 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
drupal/core
|
Packagist |
≥ 8.0.0
< 8.8.10
|
8.8.10
|
|
drupal/core
|
Packagist |
≥ 8.9.0
< 8.9.6
|
8.9.6
|
|
drupal/core
|
Packagist |
≥ 9.0.0
< 9.0.6
|
9.0.6
|
|
drupal/drupal
|
Packagist |
≥ 8.0.0
< 8.8.10
|
8.8.10
|
|
drupal/drupal
|
Packagist |
≥ 8.9.0
< 8.9.6
|
8.9.6
|
|
drupal/drupal
|
Packagist |
< 9.0.6
≥ 9.0.0
|
9.0.6
|
References
Frequently Asked Questions
What is CVE-2020-13668?
Which Drupal/core versions are affected?
What version fixes CVE-2020-13668?
Is drupal/core affected?
Is drupal/drupal affected?
What is the CVSS score of CVE-2020-13668?
What CWE is associated with CVE-2020-13668?
How can I check Packagist dependencies for CVE-2020-13668?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-m6q5-wv4x-fv6h",
"modified" : "2022-02-25T15:33:47Z",
"published" : "2022-02-12T00:00:47Z",
"aliases" : [ "CVE-2020-13668" ],
"summary" : "Cross-site Scripting in Drupal Core",
"details" : "Access Bypass vulnerability in Drupal Core allows for an attacker to leverage the way that HTML is rendered for affected forms in order to exploit the vulnerability. This issue affects: Drupal Core 8.8.x versions prior to 8.8.10; 8.9.x versions prior to 8.9.6; 9.0.x versions prior to 9.0.6.",
"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" : "drupal/core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "8.0.0"
}, {
"fixed" : "8.8.10"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "drupal/core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "8.9.0"
}, {
"fixed" : "8.9.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "drupal/core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.0.0"
}, {
"fixed" : "9.0.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "drupal/drupal"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "8.0.0"
}, {
"fixed" : "8.8.10"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "drupal/drupal"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "8.9.0"
}, {
"fixed" : "8.9.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "drupal/drupal"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.0.0"
}, {
"fixed" : "9.0.6"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-13668"
}, {
"type" : "WEB",
"url" : "https://github.com/drupal/core/commit/3184fa4b2f3b65b44884b5e858cdc7794d34b4c8"
}, {
"type" : "WEB",
"url" : "https://github.com/drupal/core/commit/58330ba58d1ac6f1a0a549e8dbde8a3e094bf4fb"
}, {
"type" : "WEB",
"url" : "https://github.com/drupal/core/commit/d4be028d81fb6b067513d788b60c3e6fc8fbd0a2"
}, {
"type" : "WEB",
"url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13668.yaml"
}, {
"type" : "WEB",
"url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13668.yaml"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/drupal/core"
}, {
"type" : "WEB",
"url" : "https://www.drupal.org/sa-core-2020-009"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-79" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2022-02-25T15:33:47Z",
"nvd_published_at" : "2022-02-11T16:15:00Z"
}
}