Auth bypass in Icewhale Casaos
CVE-2023-37266
CasaOS is an open-source Personal Cloud system. Unauthenticated attackers can craft arbitrary JWTs and access features that usually require authentication and execute arbitrary commands as `root` on CasaOS instances. This problem was addressed by improving the validation of JWTs in commit `705bf1f`. This patch is part of CasaOS 0.4.4. Users should upgrade to CasaOS 0.4.4. If they can't, they should temporarily restrict access to CasaOS to untrusted users, for instance by not exposing it publicly.
Vulnerability class: Broken Authentication
EPSS: 0.068 (93.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Icewhale Casaos
- Icewhaletech Casaos — versions < 0.4.4
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-37266?
- CVE-2023-37266 is a critical-severity vulnerability in Icewhale Casaos, classified under Improper Authentication. CVSS score: 9.8/10. Published 2023-07-17.
- How severe is CVE-2023-37266?
- Critical severity. CVSS v3 base score is 9.8 out of 10.