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Security Bulletin: Vulnerabilities in bind affect PowerKVM (CVE-2016-2776, CVE-2016-8864)

Security Bulletin


Summary

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

Vulnerability Details

CVEID: CVE-2016-2776
DESCRIPTION:
ISC BIND is vulnerable to a denial of service, caused by an assertion failure in buffer.c while a nameserver is building responses to a specifically constructed request. By sending a specially crafted DNS packet, a remote attacker could exploit this vulnerability to make named exit unexpectedly with an assertion failure.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117246 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-2016-8864
DESCRIPTION:
ISC BIND is vulnerable to a denial of service, caused by the improper handling of responses containing a DNAME answer in db.c or resolver.c. By sending a recursive response, a remote attacker could exploit this vulnerability to trigger an assertion failure.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118526 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)

Affected Products and Versions

PowerKVM 2.1 and 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 as of 3.1.0.2 update 3 or later.

For version 2.1, see https://ibm.biz/BdEnT8. This issue is addressed as of PowerKVM 2.1.1.3-65 update 13 or later. 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 for prerequisite fixes and instructions.

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References

Off

Change History

6 September 2016 - Initial Version

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

[{"Product":{"code":"SSZJY4","label":"PowerKVM"},"Business Unit":{"code":"","label":"TSS"},"Component":"Not Applicable","Platform":[{"code":"PF016","label":"Linux"}],"Version":"2.1;3.1","Edition":"KVM"}]

Document Information

Modified date:
17 June 2018

UID

isg3T1024402