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CVE-2021-3623

Published: 2 March 2022

A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system availability.

Priority

Medium

Cvss 3 Severity Score

6.1

Score breakdown

Status

Package Release Status
libtpms
Launchpad, Ubuntu, Debian
impish Ignored
(end of life)
jammy Not vulnerable
(0.9.3-0ubuntu1)
bionic Does not exist

focal Does not exist

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
trusty Does not exist

upstream
Released (0.8.4, 0.7.8, 0.6.5, 0.9.1-1)
xenial Ignored
(end of standard support)
Patches:
upstream: https://github.com/stefanberger/libtpms/commit/2f30d620d3c053f20d38b54bf76ac0907821d263
upstream: https://github.com/stefanberger/libtpms/commit/7981d9ad90a5043a05004e4ca7b46beab8ca7809
upstream: https://github.com/stefanberger/libtpms/commit/2e6173c273ca14adb11386db4e47622552b1c00e

Severity score breakdown

Parameter Value
Base score 6.1
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H