Security Bulletin: This Power System update is being released to address CVE-2023-1017 and CVE-2023-1018

Summary

TCG Trusted Platform Module code is used by PowerVM to support virtual TPM. This bulletin provides a remediation for the impacted vulnerabilities, CVE-2023-1017 and CVE-2023-1018, by upgrading PowerVM and thus addressing the exposure to the TCG TPM vulnerability.

Vulnerability Details

CVEID:CVE-2023-1017
**DESCRIPTION:**Trusted Computing Group Trusted Platform Module could allow a local authenticated attacker to execute arbitrary code on the system, caused by an out-of-bounds write flaw in the CryptParameterDecryption routine. By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code in the TPM context or crash the TPM chip/process or rendering it unusable.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/248634 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2023-1018
**DESCRIPTION:**Trusted Computing Group Trusted Platform Module could allow a local authenticated attacker to obtain sensitive information, caused by an out-of-bounds read in the CryptParameterDecryption routine. By sending a specially crafted request, an attacker could exploit this vulnerability to read or access sensitive data stored in the TPM.
CVSS Base score: 5.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/248636 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Remediation/Fixes

Customers with the products below should install FW1010.60(1010_166), FW1030.20(1030_058) or newer to remediate this vulnerability.

Power 10

1. IBM Power System E1080 (9080-HEX)

Customers with the products below should install FW1020.40(1020_106), FW1030.20(1030_060) or newer to remediate this vulnerability.

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)

Workarounds and Mitigations

None