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.

Classification

CVE ID: CVE-2023-37266

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.8

Affected Products

Vendor: IceWhaleTech

Product: CasaOS

Nuclei Template

http/cves/2023/CVE-2023-37266.yaml

Exploit Prediction Scoring System (EPSS)

EPSS Score: 15.24% (probability of being exploited)

EPSS Percentile: 95.89% (scored less or equal to compared to others)

EPSS Date: 2025-02-04 (when was this score calculated)

References

https://github.com/IceWhaleTech/CasaOS/security/advisories/GHSA-m5q5-8mfw-p2hr
https://github.com/IceWhaleTech/CasaOS/commit/705bf1facbffd2ca40b159b0303132b6fdf657ad
https://www.sonarsource.com/blog/security-vulnerabilities-in-casaos

Timeline