CVE-2023-37266 CRITICAL

CVE-2023-37266: Weak json web token (JWT) secrets in CasaOS

Vendor Icewhaletech
Product CasaOS
Weakness CWE-287 · Improper authentication
Published July 17, 2023
Last update December 12, 2024

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 17, 2023 CVE published
December 12, 2024 Record updated