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Drupal File upload access bypass and denial of service

High severity GitHub Reviewed Published May 17, 2022 to the GitHub Advisory Database • Updated Apr 23, 2024

Package

composer drupal/core (Composer)

Affected versions

>= 7.0, < 7.43
>= 8.0, < 8.0.4

Patched versions

7.43
8.0.4
composer drupal/drupal (Composer)
>= 8.0, < 8.0.4
>= 7.0, < 7.43
8.0.4
7.43

Description

The File module in Drupal 7.x before 7.43 and 8.x before 8.0.4 allows remote authenticated users to bypass access restrictions and read, delete, or substitute a link to a file uploaded to an unprocessed form by leveraging permission to create content or comment and upload files.

References

Published by the National Vulnerability Database Apr 12, 2016
Published to the GitHub Advisory Database May 17, 2022
Reviewed Apr 23, 2024
Last updated Apr 23, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS score

0.180%
(56th percentile)

Weaknesses

CVE ID

CVE-2016-3162

GHSA ID

GHSA-w2pj-c8x5-jvg2

Source code

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