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

Security Bulletin

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

Affected Product(s)	Version(s)
HMC V9.1.910.0	V9.1.910.0 and later

Remediation/Fixes

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

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

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support alerts like this.

References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Change History

29 Jul 2020: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

[{"Line of Business":{"code":"LOB08","label":"Cognitive Systems"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SGGSNP","label":"Hardware Management Console V9"},"ARM Category":[{"code":"a8m0z000000bowEAAQ","label":"Hardware Management Console"}],"ARM Case Number":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Version(s)"}]

Tips

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