Security Bulletin: This Power System update is being released to address CVE 2020-25705

Summary

POWER9: In response to security issues with BMC’s UDP network service, a new Power System firmware update is being released to address Common Vulnerabilities and Exposures issue number CVE 2020-25705.

Vulnerability Details

CVEID:CVE-2020-25705
**DESCRIPTION:**Linux Kernel could allow a remote attacker to bypass security restrictions, caused by a flaw in the way reply ICMP packets are limited. By sending a specially-crafted request, an attacker could exploit this vulnerability to bypass source port UDP randomization to scan open UDP ports.
CVSS Base score: 7.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/191785 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)

Affected Products and Versions

Remediation/Fixes

Customers with the products below running OP940, install OP940.30:

1. IBM Power System AC922 (8335-GTH, 8335-GTX)
2. IBM Hardware Management Console (HMC) System Firmware (7063-CR2)

Workarounds and Mitigations

None