CVE-2017-6927: Drupal/core Cross-Site Scripting Vulnerability
MODERATECVE-2017-6927 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 drupal cross-site scripting vulnerability. Remediation is available by upgrading affected packages to version 8.4.5, 7.57.
CVE-2017-6927 at a Glance
Security Impact
CVSS: 6.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
How to Fix CVE-2017-6927
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 8.4.5Upgrade drupal/core to 7.57Upgrade drupal/drupal to 8.4.5Upgrade drupal/drupal to 7.57Run 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-2017-6927, 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 8.4.5), 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-2017-6927 Affected Drupal/core Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
drupal/core
|
Packagist |
≥ 8.4.0
< 8.4.5
|
8.4.5
|
|
drupal/core
|
Packagist |
≥ 7.0
< 7.57
|
7.57
|
|
drupal/drupal
|
Packagist |
≥ 8.4.0
< 8.4.5
|
8.4.5
|
|
drupal/drupal
|
Packagist |
≥ 7.0
< 7.57
|
7.57
|
References
Frequently Asked Questions
What is CVE-2017-6927?
Which Drupal/core versions are affected?
What version fixes CVE-2017-6927?
Is drupal/core affected?
Is drupal/drupal affected?
What is the CVSS score of CVE-2017-6927?
What CWE is associated with CVE-2017-6927?
How can I check Packagist dependencies for CVE-2017-6927?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-585j-5449-mf5m",
"modified" : "2024-04-23T22:36:53Z",
"published" : "2022-05-14T03:35:58Z",
"aliases" : [ "CVE-2017-6927" ],
"summary" : "Drupal cross-site scripting vulnerability",
"details" : "Drupal 8.4.x versions before 8.4.5 and Drupal 7.x versions before 7.57 has a Drupal.checkPlain() JavaScript function which is used to escape potentially dangerous text before outputting it to HTML (as JavaScript output does not typically go through Twig autoescaping). This function does not correctly handle all methods of injecting malicious HTML, leading to a cross-site scripting vulnerability under certain circumstances. The PHP functions which Drupal provides for HTML escaping are not affected.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.0/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" : "8.4.0"
}, {
"fixed" : "8.4.5"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "drupal/core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "7.0"
}, {
"fixed" : "7.57"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "drupal/drupal"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "8.4.0"
}, {
"fixed" : "8.4.5"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "drupal/drupal"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "7.0"
}, {
"fixed" : "7.57"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-6927"
}, {
"type" : "WEB",
"url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2017-6927.yaml"
}, {
"type" : "WEB",
"url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2017-6927.yaml"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/drupal/core"
}, {
"type" : "WEB",
"url" : "https://lists.debian.org/debian-lts-announce/2018/02/msg00030.html"
}, {
"type" : "WEB",
"url" : "https://www.debian.org/security/2018/dsa-4123"
}, {
"type" : "WEB",
"url" : "https://www.drupal.org/sa-core-2018-001"
}, {
"type" : "WEB",
"url" : "http://www.securityfocus.com/bid/103138"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-79" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2024-04-23T22:36:53Z",
"nvd_published_at" : "2018-03-01T23:29:00Z"
}
}