Security Bulletin: This Power System update is being released to address CVE-2021-3746

Summary

A security problem for CVE-2021-3746 has been resolved which affects any VM configured with a virtual trusted platform module (vTPM) version 2.

Vulnerability Details

CVEID:CVE-2021-3746
**DESCRIPTION:**libtpms is vulnerable to a denial of service, caused by an out-of-bounds access flaw. By sending specially-crafted TPM2 command packets, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/211780 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

Customers with the products below should install FW1010.40(1010_146), FW1020.20(1020_089) or newer to remediate this concern.

Power 10

1. IBM Power System S1022 (9105-22A)
2. IBM Power System S1024 (9105-42A)
3. IBM Power System S1022S (9105-22B)
4. IBM Power System S1014 (9105-41B)
5. IBM Power System L1022 (9786-22H)
6. IBM Power System L1024 (9786-42H)
7. IBM Power System E1050 (9043-MRX)
8. IBM Power System E1080 (9080-HEX)

Workarounds and Mitigations

None