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Remote Code Execution Vulnerability in Validation Placeholders in CodeIgniter4

Critical severity GitHub Reviewed Published May 21, 2023 in codeigniter4/CodeIgniter4 • Updated Nov 11, 2023

Package

composer codeigniter4/framework (Composer)

Affected versions

< 4.3.5

Patched versions

4.3.5

Description

Impact

This vulnerability allows attackers to execute arbitrary code when you use Validation Placeholders.

The vulnerability exists in the Validation library, and validation methods in the controller and in-model validation are also vulnerable because they use the Validation library internally.

Patches

Upgrade to v4.3.5 or later.

Workarounds

Setting validation rules with an array.

E.g.:

$validation->setRules([
    'email' => ['required', 'valid_email, 'is_unique[users.email,id,{id}]'],
]);

References

For more information

If you have any questions or comments about this advisory:

References

@kenjis kenjis published to codeigniter4/CodeIgniter4 May 21, 2023
Published to the GitHub Advisory Database May 22, 2023
Reviewed May 22, 2023
Published by the National Vulnerability Database May 30, 2023
Last updated Nov 11, 2023

Severity

Critical

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
None
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:N/S:U/C:H/I:H/A:H

EPSS score

0.553%
(78th percentile)

Weaknesses

CVE ID

CVE-2023-32692

GHSA ID

GHSA-m6m8-6gq8-c9fj
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