Security Bulletin
Summary
PowerKVM is affected by vulnerabilities in MIT Kerberos (krb5). IBM has now addressed these vulnerabilities.
Vulnerability Details
CVEID: CVE-2016-3120
DESCRIPTION: MIT Kerberos is vulnerable to a denial of service, caused by a NULL pointer dereference in the validate_as_request() function. 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/115438 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)
CVEID: CVE-2016-3119
DESCRIPTION: MIT Kerberos is vulnerable to a denial of service, caused by a NULL pointer dereference in the process_db_args() function. By sending a specially crafted modify_principal command with an empty DB argument, a remote authenticated attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111772 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/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
14 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
isg3T1024550