Auth bypass in Codeigniter
CVE-2022-46170
CodeIgniter is a PHP full-stack web framework. When an application uses (1) multiple session cookies (e.g., one for user pages and one for admin pages) and (2) a session handler is set to `DatabaseHandler`, `MemcachedHandler`, or `RedisHandler`, then if an attacker gets one session cookie (e.g., one for user pages), they may be able to access pages that require another session cookie (e.g., for admin pages). This issue has been patched, please upgrade to version 4.2.11 or later. As a workaround, use only one session cookie.
Vulnerability class: Broken Authentication
EPSS: 0.008 (54.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L.
Affected products
- Codeigniter
- Codeigniter4 — versions < 4.2.11
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2022-46170?
- CVE-2022-46170 is a high-severity vulnerability in Codeigniter, classified under Improper Authentication. CVSS score: 8.6/10. Published 2022-12-22.
- How severe is CVE-2022-46170?
- High severity. CVSS v3 base score is 8.6 out of 10.