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GHSA-4v37-24gm-h554
No affected components available
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
- 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:
- Do not use
$routes->add(), and use HTTP verbs in routes. - Check the request method in the controller method before processing.
E.g.:
if (strtolower($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:
- Open an issue in codeigniter4/CodeIgniter4
- Email us at SECURITY.md
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.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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