Security Bulletin
Summary
PowerKVM is affected by vulnerabilities in MIT Kerberos 5 (krb5). IBM has now addressed these vulnerabilities.
Vulnerability Details
CVEID: CVE-2017-11368
DESCRIPTION: MIT Kerberos 5 is vulnerable to a denial of service, caused by a KDC assertion failure. By sending a specially-crafted request, a remote authenticated attacker could exploit this vulnerability to cause memory allocation failure.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/130207 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-2017-7562
DESCRIPTION: MIT krb5 could allow a remote authenticated attacker to bypass security restrictions, caused by the improper validation of a forged certificate EKU and SAN. An attacker could exploit vulnerability to gain unauthorized access to the system to impersonate arbitrary principals under rare and erroneous circumstances.
CVSS Base Score: 6.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/143332 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)
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. See https://ibm.biz/BdHggw. This issue is addressed starting with v3.1.0.2 update 14.
Workarounds and Mitigations
none
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References
Change History
28 June 2018 - 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:
06 July 2018
UID
ibm10715797