Security Bulletin: Vulnerabilities in krb5 affect PowerKVM

Summary

PowerKVM is affected by vulnerabilities in krb5. IBM has now addressed these vulnerabilities.

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

PowerKVM 3.1

Remediation/Fixes

Customers can update PowerKVM systems by using “yum update”.

Fix images are made available via Fix Central. For version 3.1, see https://ibm.biz/BdHggw. This issue is addressed starting with v3.1.0.2 update 16.

Workarounds and Mitigations

none