Security Bulletin: Vulnerabilities in Kerberos affect Power Hardware Management Console (CVE-2017-11368, CVE-2017-7562)

Summary

Kerberos is used by Power Hardware Management Console (HMC). HMC has addressed the applicable CVEs

Vulnerability Details

CVEID: CVE-2017-11368 DESCRIPTION: MIT Kerberos 5 is vulnerable to a denial of service, caused by a KDC assertion failure. By sending a specially-crafted request, a remote authenticated attacker could exploit this vulnerability to cause memory allocation failure.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/130207&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2017-7562 DESCRIPTION: MIT krb5 could allow a remote authenticated attacker to bypass security restrictions, caused by the improper validation of a forged certificate EKU and SAN. An attacker could exploit vulnerability to gain unauthorized access to the system to impersonate arbitrary principals under rare and erroneous circumstances.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/143332&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)

Affected Products and Versions

Power HMC V8.8.6.0
Power HMC V8.8.7.0
Power HMC V9.1.910.0

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

|

V8.8.6.0 SP3

|

MB04172

|

MH01784

Power HMC

|

V8.8.7.0 SP2 ppc

|

MB04174

|

MH01786

Power HMC

|

V8.8.7.0 SP2 x86

|

MB04173

|

MH01785

Power HMC

|

V9.1.920.0 ppc

| MB04176 | MH01760
Power HMC | V9.1.920.0 x86 | MB04175 | MH01759

Workarounds and Mitigations

None