Security Bulletin
Summary
PowerKVM is affected by a vulnerability in the util-linux package's libblkid library. IBM has now addressed this vulnerability.
Vulnerability Details
CVEID: CVE-2016-5011
DESCRIPTION: Util-linux is vulnerable to a denial of service, caused by an error when parsing Master Boot Record (MBR) record. By connecting a device with a specially-crafted Master Boot Record (MBR) record, a local attacker could exploit this vulnerability to cause the system to become unresponsive.
CVSS Base Score: 4.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/114952 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:P/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
Change History
6 November 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
17 June 2018
UID
isg3T1024543