Security Bulletin: Vulnerability in Kerberos affects Power Hardware Management Console ( CVE-2018-5730 CVE-2018-5729)

Summary

MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to circumvent a DN containership check by supplying both a “linkdn” and “containerdn” database argument, or by supplying a DN string which is a left extension of a container DN string but is not hierarchically within the container DN.

CVE-2018-5729: null dereference in kadmind or DN container check bypass by supplying special crafted data

Vulnerability Details

CVEID: CVE-2018-5730
DESCRIPTION: MIT krb5 could allow a remote authenticated attacker to bypass security restrictions, caused by a flaw in the LDAP Kerberos database. By sending a specially-crafted request, an attacker could exploit this vulnerability to bypass DN container check.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/139970&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)

CVEID: CVE-2018-5729
DESCRIPTION: MIT krb5 is vulnerable to a denial of service, caused by a NULL pointer dereference in the LDAP Kerberos database. By sending specially-crafted data, a remote authenticated attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/139969&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:N/A:H)

Affected Products and Versions

Power HMC V8.7.0.0
Power HMC V9.1.910.0

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

|

V8.8.7.2 PTF3 ppc

|

MB04193

|

MH01807

Power HMC

|

V8.8.7.2 PTF3 x86

|

MB04192

|

MH01806

Power HMC

|

V9.1.921.0 PTF3 ppc

|

MB04195

|

MH01809

Power HMC

|

V9.1.921.0 PTF3 x86

|

MB04194

|

MH01808

Workarounds and Mitigations

None