CVE-2021-3746 - CVE House
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Status published Medium CVE-2021-3746

A flaw was found in the libtpms code that may...

Vulnerability Description

A flaw was found in the libtpms code that may cause access beyond the boundary of internal buffers. The vulnerability is triggered by specially-crafted TPM2 command packets that then trigger the issue when the state of the TPM2's volatile state is written. The highest threat from this vulnerability is to system availability. This issue affects libtpms versions before 0.8.5, before 0.7.9 and before 0.6.6.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

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Affected Vendor

Affected Software

libtpms
Vulnerable Versions:
libtpms 0.8.5, libtpms 0.7.9, libtpms 0.6.6

Timeline

Official Publish: October 19th, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-119

MITRE ATT&CK TTPs

T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1203 Exploitation for Client Execution
Execution
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control