CVE-2022-35943

Medium

Description

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)

SeverityMedium
CVSS5.9
Exploit probability—
ProductCodeigniter
PublishedAug 12, 2022
First seenAug 12, 2022

How to fix

Update
  • codeigniter codeigniter4.2.3 or later
  • codeigniter4/shield1.0.0-beta.2 or later

Affected products

ProductAffected versionsFixed in
codeigniter codeigniterv < 4.2.34.2.3
codeigniter shield1.0.0—
codeigniter4/shieldPackagist1.0.0-beta ≤ v < 1.0.0-beta.21.0.0-beta.2

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