What’s Vulnerable › Vulnerabilities

CVE-2023-37265: Incorrect identification of source IP addresses in CasaOS

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-07-17 · updated 2026-06-17
• Weakness: CWE-306

Description

CasaOS is an open-source Personal Cloud system. Due to a lack of IP address verification an unauthenticated attackers can execute arbitrary commands as `root` on CasaOS instances. The problem was addressed by improving the detection of client IP addresses in `391dd7f`. 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.

Affected products

• IceWhaleTech CasaOS-UserService: before 0.4.4; 0.4.4-alpha1, 0.4.4-alpha2, 0.4.4-alpha3, 0.4.4-alpha4, 0.4.4-alpha5 — fixed in 0.4.4
• Icewhale Casaos-Gateway: before 0.4.4; 0.4.4-alpha1 — fixed in 0.4.4

How to fix

Upgrade to a fixed version: IceWhaleTech CasaOS-UserService 0.4.4; Icewhale Casaos-Gateway 0.4.4. Check the vendor advisory for mitigations.

References

• https://github.com/IceWhaleTech/CasaOS-Gateway/commit/391dd7f0f239020c46bf057cfa25f82031fc15f7
• https://github.com/IceWhaleTech/CasaOS-Gateway/security/advisories/GHSA-vjh7-5r6x-xh6g
• https://www.sonarsource.com/blog/security-vulnerabilities-in-casaos
• https://github.com/IceWhaleTech/CasaOS-Gateway/commit/391dd7f0f239020c46bf057cfa25f82031fc15f7
• https://github.com/IceWhaleTech/CasaOS-Gateway/security/advisories/GHSA-vjh7-5r6x-xh6g

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