PT-2022-23049 · Shield+1 · Sshield+1

Mgatner · Published 2022-08-12 · Updated 2024-03-06 · CVE-2022-35943

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L

Name of the Vulnerable Software and Affected Versions CodeIgniter versions prior to 4.2.3 Shield versions prior to 1.0.0-beta.2

Description This issue may allow attackers to bypass the CodeIgniter4 CSRF protection mechanism with CodeIgniter Shield. For this attack to succeed, the attacker must have direct or indirect control over a subdomain site of the target site. The attack is possible whether ConfigSecurity::$csrfProtection is set to 'cookie' or 'session', and whether ConfigSecurity::$regenerate is true or false.

Recommendations Upgrade to CodeIgniter v4.2.3 or later and Shield v1.0.0-beta.2 or later. As a workaround:

• set ConfigSecurity::$csrfProtection to 'session'
• remove old session data right after login
• regenerate CSRF token right after login

Exploit

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

BIT-CODEIGNITER-2022-35943

CVE-2022-35943

GHSA-5HM8-VH6R-2CJQ

Affected Products

Codeigniter

Sshield

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/35xxx/CVE-2022-35943.json · Exploit
• 🔥 https://github.com/codeigniter4/shield/security/advisories/GHSA-5hm8-vh6r-2cjq · Exploit
• https://osv.dev/vulnerability/BIT-codeigniter-2022-35943 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-35943 · Security Note
• https://osv.dev/vulnerability/GHSA-5hm8-vh6r-2cjq · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-35943 · Vendor Advisory
• https://github.com/codeigniter4/shield · Note
• https://github.com/codeigniter4/shield/commit/342a368536678621998c3c41d276480cd14ec6c6 · Note
• https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie/SameSite · Note
• https://codeigniter4.github.io/userguide/libraries/security.htm · Note
• https://jub0bs.com/posts/2021-01-29-great-samesite-confusion · Note
• https://t.me/cibsecurity/48119 · Telegram Post