GHSA-7v68-3pr5-h3cr: Drupal/core Remote Code Execution Vulnerability

CRITICAL
Share
CWE-94
Published
Advisory Summary

GHSA-7v68-3pr5-h3cr is a CRITICAL remote code execution vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Drupal/core libraries in the Packagist ecosystem. The issue involves drupal core insufficient contextual links validation leads to remote code execution. Remediation is available by upgrading affected packages to version 8.5.8, 8.6.2.

GHSA-7v68-3pr5-h3cr at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-7v68-3pr5-h3cr
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Drupal/core
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix GHSA-7v68-3pr5-h3cr

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: 8.5.8 
Upgrade drupal/core to 8.5.8
drupal/core fixed: 8.6.2 
Upgrade drupal/core to 8.6.2
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 drupal/core

How to Check if You Are Affected

To determine whether your application is affected by GHSA-7v68-3pr5-h3cr, 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 8.5.8), 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. 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 Contextual Links module doesn't sufficiently validate the requested contextual links. This vulnerability is mitigated by the fact that an attacker must have a role with the permission "access contextual links".

GHSA-7v68-3pr5-h3cr Affected Drupal/core Versions

2 component(s)
Fixed Versions:
8.5.88.6.2
Product / Package Ecosystem Affected Versions Fixed Version
drupal/core
 Packagist
≥ 8.0.0
< 8.5.8
8.5.8
drupal/core
 Packagist
≥ 8.6.0
< 8.6.2
8.6.2

References

Drupal/core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/2018-10-17-5.yaml
Drupal/core Source Repository REPOSITORY
https://github.com/drupal/core
www.drupal.org/sa-core-2018-006 WEB
https://www.drupal.org/sa-core-2018-006

Frequently Asked Questions

What is GHSA-7v68-3pr5-h3cr?
GHSA-7v68-3pr5-h3cr is a security vulnerability in Drupal/core involving Drupal Core Insufficient Contextual Links validation leads to Remote Code Execution under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Drupal/core versions are affected?
Affected versions include releases prior to 8.5.8, 8.6.2 across affected packages: drupal/core.
What version fixes GHSA-7v68-3pr5-h3cr?
Upgrading to 8.5.8, 8.6.2 (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 8.5.8, 8.6.2. Upgrade your dependency to 8.5.8, 8.6.2 or later.
What CWE is associated with GHSA-7v68-3pr5-h3cr?
GHSA-7v68-3pr5-h3cr is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check Packagist dependencies for GHSA-7v68-3pr5-h3cr?
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-7v68-3pr5-h3cr",
  "modified" : "2024-05-15T20:37:17Z",
  "published" : "2024-05-15T20:37:17Z",
  "aliases" : [ ],
  "summary" : "Drupal Core Insufficient Contextual Links validation leads to Remote Code Execution",
  "details" : "The Contextual Links module doesn't sufficiently validate the requested contextual links.\nThis vulnerability is mitigated by the fact that an attacker must have a role with the permission \"access contextual links\".",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.5.8"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "drupal/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.6.0"
      }, {
        "fixed" : "8.6.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/2018-10-17-5.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/drupal/core"
  }, {
    "type" : "WEB",
    "url" : "https://www.drupal.org/sa-core-2018-006"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-15T20:37:17Z",
    "nvd_published_at" : null
  }
}