7.1
CVSSv2

CVE-2021-3746

Published: 19/10/2021 Updated: 22/10/2021
CVSS v2 Base Score: 7.1 | Impact Score: 6.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 6.5 | Impact Score: 3.6 | Exploitability Score: 2.8
VMScore: 632
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C

Vulnerability Summary

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 prior to 0.8.5, prior to 0.7.9 and prior to 0.6.6.

Vulnerability Trend

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libtpms project libtpms

fedoraproject fedora 34

redhat enterprise linux 8.0

Vendor Advisories

A bug was discovered in the libtpms code that may cause access beyond the boundary of internal buffers The vulnerability can be triggered by specially-crafted TPM 2 command packets that then trigger the issue when the state of the TPM 2's volatile state is marshalled/written ...