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CakePHP allows method override parameters to bypass CSRF checks

High severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Jan 30, 2023

Package

composer cakephp/cakephp (Composer)

Affected versions

>= 4.0.0, < 4.0.10
>= 4.1.0, < 4.1.4

Patched versions

4.0.10
4.1.4

Description

A vulnerability exists in CakePHP versions 4.0.x through 4.1.3. The CsrfProtectionMiddleware component allows method override parameters to bypass CSRF checks by changing the HTTP request method to an arbitrary string that is not in the list of request methods that CakePHP checks. Additionally, the route middleware does not verify that this overriden method (which can be an arbitrary string) is actually an HTTP method.

References

Published by the National Vulnerability Database Jan 26, 2021
Published to the GitHub Advisory Database May 24, 2022
Reviewed Jan 14, 2023
Last updated Jan 30, 2023

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
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS score

0.101%
(43rd percentile)

Weaknesses

CVE ID

CVE-2020-35239

GHSA ID

GHSA-9pgx-pf36-w46r

Source code

Credits

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