Security Bulletin: Vulnerability in MIT Kerberos 5 (CVE-2020-28196) affects HMC

Summary

MIT Kerberos 5 (krb5) is used by Power Hardware Management Console (HMC). HMC has addressed the applicable CVE.

Vulnerability Details

CVEID:CVE-2020-28196
**DESCRIPTION:**MIT Kerberos 5 (aka krb5) is vulnerable to a denial of service, caused by an unbounded recursion flaw in lib/krb5/asn.1/asn1_encode.c. By sending a specially-crafted ASN.1-encoded Kerberos message, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/191321 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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

|

V9.2.952.0 ppc

|

MB04300

|

MH01905

Power HMC

|

V9.2.952.0 x86

|

MB04299

|

MH01904

Power HMC

|

V10.1.1010.0 ppc

|

MB04291

|

MF68970

Power HMC

|

V10.1.1010.0 x86

|

MB04294

|

MF68994

Workarounds and Mitigations

None