Improper Initialization Affecting tpm2-tools package, versions <0:4.1.1-5.el8


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-RHEL8-TPM2TOOLS-4187788
  • published26 Jul 2021
  • disclosed25 May 2021

Introduced: 25 May 2021

CVE-2021-3565  (opens in a new tab)
CWE-665  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade RHEL:8 tpm2-tools to version 0:4.1.1-5.el8 or higher.
This issue was patched in RHSA-2021:4413.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tpm2-tools package and not the tpm2-tools package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A flaw was found in tpm2-tools in versions before 5.1.1 and before 4.3.2. tpm2_import used a fixed AES key for the inner wrapper, potentially allowing a MITM attacker to unwrap the inner portion and reveal the key being imported. The highest threat from this vulnerability is to data confidentiality.

CVSS Scores

version 3.1