Code execution via missing command-buffer length check
Published Feb 28, 2023 · Updated Nov 4, 2025
Out-of-bounds write in TCG TPM 2.0 revisions 1.19, 1.38, and 1.59 allows local users to execute code in the TPM context. CryptParameterDecryption omits a command-buffer length check, allowing two attacker-chosen bytes to be written beyond the ExecuteCommand buffer. A user-mode application must send a malicious encrypted-parameter command to affected TPM firmware; exploitation can corrupt protected data, crash the TPM, or elevate privileges.
Summary
What happened
Out-of-bounds write in TCG TPM 2.0 revisions 1.19, 1.38, and 1.59 allows local users to execute code in the TPM context. CryptParameterDecryption omits a command-buffer length check, allowing two attacker-chosen bytes to be written beyond the ExecuteCommand buffer. A user-mode application must send a malicious encrypted-parameter command to affected TPM firmware; exploitation can corrupt protected data, crash the TPM, or elevate privileges.
The record
- CVE
- CVE-2023-1017
- Published
- Feb 28, 2023
- Updated
- Nov 4, 2025
- Vendor
- Trusted Computing Group
- Product
- Trusted Platform Module 2.0 Library Specification
- Classifications
- CWE-787, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 28, 2023CVE publishedPublication date reported by the CVE source.
- Nov 4, 2025Record 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=1.19
- Affected versionversion=1.38
- Affected versionversion=1.59
What conditions does exploitation require?
What is affected?
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.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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