CVE-2023-37266
Unauthenticated attackers can craft arbitrary JWTs and access features that usually require authentication and execute arbitrary commands as `root` on CasaOS instances.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.84% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- icewhale/casaos
- Source
- security-advisories@github.com
References
- https://github.com/IceWhaleTech/CasaOS/commit/705bf1facbffd2ca40b159b0303132b6fdf657adPatch
- https://github.com/IceWhaleTech/CasaOS/security/advisories/GHSA-m5q5-8mfw-p2hrPatch, Third Party Advisory
- https://www.sonarsource.com/blog/security-vulnerabilities-in-casaosExploit, Third Party Advisory
- https://github.com/IceWhaleTech/CasaOS/commit/705bf1facbffd2ca40b159b0303132b6fdf657adPatch
- https://github.com/IceWhaleTech/CasaOS/security/advisories/GHSA-m5q5-8mfw-p2hrPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.