CVE-2017-6931: Drupal/core Drupal Settings Tray Access Bypass Vulnerability

MODERATE
Advisory Identifier: GHSA-7ffh-cjvg-fpr4
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CVSS 6.5
CWE-434
Published
Advisory Summary

CVE-2017-6931 is a MODERATE (CVSS 6.5) drupal settings tray access bypass vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Drupal/core libraries in the Packagist ecosystem. The issue involves drupal settings tray access bypass. Remediation is available by upgrading affected packages to version 8.4.5.

CVE-2017-6931 at a Glance

CVE Identifier CVE-2017-6931
GHSA Identifier GHSA-7ffh-cjvg-fpr4
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N).

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

How to Fix CVE-2017-6931

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: 8.4.5 
Upgrade drupal/core to 8.4.5
drupal/drupal fixed: 8.4.5 
Upgrade drupal/drupal to 8.4.5
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-2017-6931, 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 8.4.5), 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-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. 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

In Drupal versions 8.4.x versions before 8.4.5 the Settings Tray module has a vulnerability that allows users to update certain data that they do not have the permissions for. If you have implemented a Settings Tray form in contrib or a custom module, the correct access checks should be added. This release fixes the only two implementations in core, but does not harden against other such bypasses. This vulnerability can be mitigated by disabling the Settings Tray module.

CVE-2017-6931 Affected Drupal/core Versions

2 component(s)
Fixed Versions:
8.4.5
Product / Package Ecosystem Affected Versions Fixed Version
drupal/core
 Packagist
≥ 8.4.0
< 8.4.5
8.4.5
drupal/drupal
 Packagist
≥ 8.4.0
< 8.4.5
8.4.5

References

NVD — CVE-2017-6931 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-6931
Drupal/core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2017-6931.yaml
Drupal/core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2017-6931.yaml
Drupal/core Source Repository REPOSITORY
https://github.com/drupal/core
www.drupal.org/sa-core-2018-001 WEB
https://www.drupal.org/sa-core-2018-001

Frequently Asked Questions

What is CVE-2017-6931?
CVE-2017-6931 is a security vulnerability in Drupal/core involving Drupal Settings Tray access bypass under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which Drupal/core versions are affected?
Affected versions include releases prior to 8.4.5 across affected packages: drupal/core, drupal/drupal.
What version fixes CVE-2017-6931?
Upgrading to 8.4.5 (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 8.4.5. Upgrade your dependency to 8.4.5 or later.
Is drupal/drupal affected?
Yes, drupal/drupal is affected in releases prior to 8.4.5. Upgrade your dependency to 8.4.5 or later.
What is the CVSS score of CVE-2017-6931?
CVE-2017-6931 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2017-6931?
CVE-2017-6931 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).
How can I check Packagist dependencies for CVE-2017-6931?
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-7ffh-cjvg-fpr4",
  "modified" : "2024-04-23T22:35:39Z",
  "published" : "2022-05-13T01:46:49Z",
  "aliases" : [ "CVE-2017-6931" ],
  "summary" : "Drupal Settings Tray access bypass",
  "details" : "In Drupal versions 8.4.x versions before 8.4.5 the Settings Tray module has a vulnerability that allows users to update certain data that they do not have the permissions for. If you have implemented a Settings Tray form in contrib or a custom module, the correct access checks should be added. This release fixes the only two implementations in core, but does not harden against other such bypasses. This vulnerability can be mitigated by disabling the Settings Tray module.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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/drupal"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.4.0"
      }, {
        "fixed" : "8.4.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-6931"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2017-6931.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2017-6931.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/drupal/core"
  }, {
    "type" : "WEB",
    "url" : "https://www.drupal.org/sa-core-2018-001"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-23T22:35:39Z",
    "nvd_published_at" : "2018-03-01T23:29:00Z"
  }
}