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CodeIgniter4 allows spoofing of IP address when using proxy

High severity GitHub Reviewed Published Dec 22, 2022 in codeigniter4/CodeIgniter4 • Updated Feb 1, 2023

Package

composer codeigniter4/framework (Composer)

Affected versions

< 4.2.11

Patched versions

4.2.11

Description

Impact

This vulnerability may allow attackers to spoof their IP address when your server is behind a reverse proxy.

Patches

Upgrade to v4.2.11 or later, and configure Config\App::$proxyIPs.

Workarounds

Do not use $request->getIPAddress().

References

For more information

If you have any questions or comments about this advisory:

References

@MGatner MGatner published to codeigniter4/CodeIgniter4 Dec 22, 2022
Published by the National Vulnerability Database Dec 22, 2022
Published to the GitHub Advisory Database Dec 22, 2022
Reviewed Dec 22, 2022
Last updated Feb 1, 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
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
Low

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:H/PR:N/UI:N/S:U/C:H/I:L/A:L

EPSS score

0.069%
(32nd percentile)

Weaknesses

CVE ID

CVE-2022-23556

GHSA ID

GHSA-ghw3-5qvm-3mqc

Source code

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