Security Bulletin: This Power System update is being released to address CVE 2021-20505

Summary

POWER9: In response to a weakness in a set of PowerVM service procedures a new Power System firmware update is being released to address Common Vulnerabilities and Exposures issue number CVE 2021-20505.

Vulnerability Details

CVEID:CVE-2021-20505
**DESCRIPTION:**The PowerVM Logical Partition Mobility(LPM) encryption key exchange protocol can be compromised. If an attacker has the ability to capture encrypted LPM network traffic and is able to gain service access to the FSP they can use this information to perform a series of PowerVM service procedures to decrypt the captured migration traffic
CVSS Base score: 4.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/198232 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

PowerVM Hypervisor| FW930
PowerVM Hypervisor| FW940
PowerVM Hypervisor| FW950

Remediation/Fixes

Customers with the products below should install FW930.40(VL930_134), FW940.30(VL940_071), FW950.00(VL950_045) or above to remediate this concern.

1. IBM Power System S922 (9009-22A, 9009-22G)

2. IBM Power System H922 (9223-22H, 9223-22S)

3. IBM Power System S914 (9009-41A, 9009-41G)

4. IBM Power System S924 (9009-42A, 9009-42G)

5. IBM Power System H924 (9223-42H, 9223-42S)

6. IBM Power System E950 (9040-MR9)

7. IBM Power System E980 (9080-M98, 9080-M9S)

Workarounds and Mitigations

None