Security Bulletin: Vulnerabilities in ISC BIND affect PowerKVM

Summary

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

Vulnerability Details

CVEID: CVE-2017-3143**
DESCRIPTION:** ISC BIND could allow a remote attacker to bypass security restrictions, caused by an error when an attacker can send and receive messages to an authoritative DNS server and has knowledge of a valid TSIG key name. By sending specially crafted data, an attacker could exploit this vulnerability to bypass TSIG authentication and manipulate BIND into accepting an unauthorized dynamic update.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/127902 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:H/A:N)

CVEID: CVE-2017-3142**
DESCRIPTION:** ISC BIND could allow a remote attacker to bypass security restrictions, caused by an error when an attacker can send and receive messages to an authoritative DNS server and has knowledge of a valid TSIG key name. By sending a specially crafted request packet, an attacker could exploit this vulnerability to bypass TSIG authentication on AXFR requests and transfer the target zone.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/127901 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

PowerKVM 2.1 and 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 8.

For version 2.1, see https://ibm.biz/BdEnT8. This issue is addressed starting with PowerKVM 2.1.1.3-65 update 17. Customers running v2.1 are, in any case, encouraged to upgrade to v3.1.

For v2.1 systems currently running fix levels of PowerKVM prior to 2.1.1, please see <http://download4.boulder.ibm.com/sar/CMA/OSA/05e4c/0/README&gt; for prerequisite fixes and instructions.

Workarounds and Mitigations

none