CRITICAL

CVE-2023-37266

CVSS v3

9.8

CRITICAL

EPSS Score

89.2%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

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.

Technical details

Published
7/17/2023

Frequently asked questions

What is 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.

Is CVE-2023-37266 actively exploited?

Active exploitation of CVE-2023-37266 has not been confirmed. The EPSS score is 89.2%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-37266?

CVE-2023-37266 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2023-37266 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.