Security Bulletin: Vulnerability in ntp (CVE-2020-11868 and CVE-2020-13817).

Summary

NTP (Network Time Protocol) used to synchronize the time on your Power Hardware Management Console (HMC) with a centralized NTP server. HMC has addressed the applicable CVEs.

Vulnerability Details

CVEID:CVE-2020-11868
**DESCRIPTION:**NTP is vulnerable to a denial of service, caused by a flaw in ntpd. By sending a server mode packet with a spoofed source IP address, a remote attacker could exploit this vulnerability to block unauthenticated synchronization resulting in a denial of service condition.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/180011 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2020-13817
**DESCRIPTION:**NTP is vulnerable to a denial of service, caused by an issue when relying on unauthenticated IPv4 time sources in ntpd. By predicting transmit timestamps for use in spoofed packets, a remote attacker could exploit this vulnerability to cause the daemon to crash or system time change.
CVSS Base score: 7.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/183494 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H)

Affected Products and Versions

Remediation/Fixes

Remediation/Fixes

The following fixes are available on IBM Fix Central at: <http://www-933.ibm.com/support/fixcentral/&gt;

Product

|

VRMF

|

APAR

|

Remediation/Fix

—|—|—|—

Power HMC

|

V9.1.940.0 SP1 ppc

|

MB04257

|

MH01865

Power HMC

|

V9.1.940.0 SP1 x86_64

|

MB04256

|

MH01864

Workarounds and Mitigations

None