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GHSA-4v37-24gm-h554

MediumCVSS 6.3 / 10
Published Mar 1, 2022·Last modified Dec 6, 2023
Affected Components(0)

No affected components available

Description

Impact

This vulnerability might allow remote attackers to bypass the CodeIgniter4 CSRF protection mechanism.

Patches

Upgrade to v4.1.9 or later.

Workarounds

These are workarounds for this vulnerability, but you will still need to code as these after upgrading to v4.1.9. Otherwise, the CSRF protection may be bypassed.

When Auto-Routing is Enabled

  1. Check the request method in the controller method before processing.

E.g.:

        if (strtolower($this->request->getMethod()) !== 'post') {
            return $this->response->setStatusCode(405)->setBody('Method Not Allowed');
        }

When Auto-Routing is Disabled

Do one of the following:

  1. Do not use $routes->add(), and use HTTP verbs in routes.
  2. Check the request method in the controller method before processing.

E.g.:

        if (strtolower($this->request->getMethod()) !== 'post') {
            return $this->response->setStatusCode(405)->setBody('Method Not Allowed');
        }

References

For more information

If you have any questions or comments about this advisory:

Risk Scores
Base Score
6.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the integrity of the data. There is a low impact on the availability of the system.

Threat Intelligence
5.8

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.56%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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