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

What is CVE-2023-37266?

CVE-2023-37266 is a critical vulnerability in IceWhaleTech CasaOS, published on 17 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-287

Which versions are affected by CVE-2023-37266?

3 open source packages ship an affected version, including github.com/IceWhaleTech/CasaOS. It affects 1 product.

Products include Icewhale Casaos.

How do I fix CVE-2023-37266?

Upgrade github.com/IceWhaleTech/CasaOS to 0.4.4 or later.

Is CVE-2023-37266 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-37266 exists.

Public exploit code: 1 Nuclei template.

Other vulnerabilities in IceWhaleTech CasaOS

• CVE-2023-37265 Incorrect identification of source IP addresses in CasaOS Critical 9.8
• CVE-2022-24193 Command Injection in CasaOS Critical 9.8
• CVE-2024-24767 CasaOS Improper Restriction of Excessive Authentication Attempts vulnerability Critical 9.1
• CVE-2023-37469 CasaOS Command Injection vulnerability High 8.8
• CVE-2024-24765 CasaOS-UserService allows unauthorized access to any file High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-m5q5-8mfw-p2hr, GO-2023-1931.