CVE-2022-35943: SameSite may allow cross-site request forgery (CSRF) protection to be bypassed
First published: Fri Aug 12 2022(Updated: )
Shield is an authentication and authorization framework for CodeIgniter 4. This vulnerability may allow [SameSite Attackers](https://canitakeyoursubdomain.name/) to bypass the [CodeIgniter4 CSRF protection](https://codeigniter4.github.io/userguide/libraries/security.html) mechanism with CodeIgniter Shield. For this attack to succeed, the attacker must have direct (or indirect, e.g., XSS) control over a subdomain site (e.g., `https://a.example.com/`) of the target site (e.g., `http://example.com/`). Upgrade to **CodeIgniter v4.2.3 or later** and **Shield v1.0.0-beta.2 or later**. As a workaround: set `Config\Security::$csrfProtection` to `'session,'`remove old session data right after login (immediately after ID and password match) and regenerate CSRF token right after login (immediately after ID and password match)
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Codeigniter Codeigniter | <4.2.3 | |
| CodeIgniter Shield | =1.0.0-beta |
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Reference Links
Frequently Asked Questions
What is CVE-2022-35943?
CVE-2022-35943 is a vulnerability in the Shield authentication and authorization framework for CodeIgniter 4.
How does CVE-2022-35943 affect CodeIgniter 4?
CVE-2022-35943 allows SameSite Attackers to bypass the CodeIgniter4 CSRF protection mechanism.
What is the severity of CVE-2022-35943?
CVE-2022-35943 has a severity rating of 8.8 (high).
How can I fix CVE-2022-35943?
To fix CVE-2022-35943, it is recommended to update to the latest version of CodeIgniter and Shield.
Where can I find more information about CVE-2022-35943?
You can find more information about CVE-2022-35943 in the CodeIgniter4 security advisories and the CVE database.
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