What is CVE-2022-23556?

CVE-2022-23556 is a vulnerability that allows attackers to spoof their IP address when the server is behind a reverse proxy in CodeIgniter.

How severe is CVE-2022-23556?

CVE-2022-23556 has a severity rating of 7.5 (high).

How can I fix CVE-2022-23556?

To fix CVE-2022-23556, upgrade to CodeIgniter version 4.2.11 or later, and configure Config\App::$proxyIPs. Alternatively, you can temporarily avoid the vulnerability by not using $requ…

Where can I find more information about CVE-2022-23556?

You can find more information about CVE-2022-23556 in the official GitHub security advisory and commit: [GitHub Advisory](https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-ghw3-5qvm-3mqc), [GitHub Commit](https://github.com/codeigniter4/CodeIgniter4/commit/5ca8c99b2db09a2a08a013836628028ddc984659).

What is the Common Weakness Enumeration (CWE) ID for CVE-2022-23556?

The CWE ID for CVE-2022-23556 is CWE-345.

Vulnerability/
CVE-2022-23556

high

7.5

CWE

345

22/12/2022

3/8/2024

CVE-2022-23556: CodeIgniter is vulnerable to IP address spoofing when using proxy

First published: Thu Dec 22 2022(Updated: )

CodeIgniter is a PHP full-stack web framework. This vulnerability may allow attackers to spoof their IP address when the server is behind a reverse proxy. This issue has been patched, please upgrade to version 4.2.11 or later, and configure `Config\App::$proxyIPs`. As a workaround, do not use `$request->getIPAddress()`.

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
composer/codeigniter4/framework	<4.2.11
Codeigniter Codeigniter	>=4.0.0<4.2.11

Remedy

https://github.com/codeigniter4/CodeIgniter4/commit/5ca8c99b2db09a2a08a013836628028ddc984659

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is CVE-2022-23556?
CVE-2022-23556 is a vulnerability that allows attackers to spoof their IP address when the server is behind a reverse proxy in CodeIgniter.
How severe is CVE-2022-23556?
CVE-2022-23556 has a severity rating of 7.5 (high).
How can I fix CVE-2022-23556?
To fix CVE-2022-23556, upgrade to CodeIgniter version 4.2.11 or later, and configure Config\App::$proxyIPs. Alternatively, you can temporarily avoid the vulnerability by not using $requ…
Where can I find more information about CVE-2022-23556?
You can find more information about CVE-2022-23556 in the official GitHub security advisory and commit: [GitHub Advisory](https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-ghw3-5qvm-3mqc), [GitHub Commit](https://github.com/codeigniter4/CodeIgniter4/commit/5ca8c99b2db09a2a08a013836628028ddc984659).
What is the Common Weakness Enumeration (CWE) ID for CVE-2022-23556?
The CWE ID for CVE-2022-23556 is CWE-345.

collector/friends-of-php
collector/nvd-index
agent/type
agent/softwarecombine
agent/first-publish-date
collector/mitre-cve
source/MITRE
agent/weakness
agent/title
agent/severity
agent/remedy
agent/author
agent/references
agent/last-modified-date
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vendor/codeigniter
canonical/codeigniter codeigniter
version/codeigniter codeigniter/4.0.0

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