Root command execution via unvalidated JWT signatures
Published Jul 17, 2023 · Updated Dec 12, 2024
Improper authentication in IceWhale Technology Limited CasaOS before 0.4.4 allows remote attackers to execute commands as root via forged JWTs. The v1 and v2 route middleware accept token claims without validating the JWT signature, allowing an empty-secret HS256 token to impersonate an administrator. Network access to a CasaOS HTTP interface is sufficient; no credentials or user interaction are required, and successful exploitation grants root-level control of the host.
Summary
What happened
Improper authentication in IceWhale Technology Limited CasaOS before 0.4.4 allows remote attackers to execute commands as root via forged JWTs. The v1 and v2 route middleware accept token claims without validating the JWT signature, allowing an empty-secret HS256 token to impersonate an administrator. Network access to a CasaOS HTTP interface is sufficient; no credentials or user interaction are required, and successful exploitation grants root-level control of the host.
The record
- CVE
- CVE-2023-37266
- Published
- Jul 17, 2023
- Updated
- Dec 12, 2024
- Vendor
- IceWhale Technology Limited
- Product
- CasaOS
- Classifications
- CWE-287, CWE-1391, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 17, 2023CVE publishedPublication date reported by the CVE source.
- Dec 12, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <0.4.4
- Affected versionversion=< 0.4.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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