Security Bulletin
Summary
PowerKVM is affected by vulnerabilities in GnuTLS. IBM has now addressed these vulnerabilities.
Vulnerability Details
CVEID: CVE-2018-10846
DESCRIPTION: GnuTLS could allow a local authenticated attacker to obtain sensitive information, caused by a cache-based side channel issue. By using a combination of Just in Time Prime+probe attack in combination with Lucky-13 attack, a remote attacker could exploit this vulnerability to recover plain text and obtain information.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/148725 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N)
CVEID: CVE-2018-10845
DESCRIPTION: GnuTLS could allow a remote attacker to obtain sensitive information, caused by a flaw in the implementation of HMAC-SHA-384. By sending a specially-crafted packet, a remote attacker could exploit this vulnerability to obtain information.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/148730 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2018-10844
DESCRIPTION: GnuTLS could allow a remote attacker to obtain sensitive information, caused by a flaw in the implementation of HMAC-SHA-256. By sending a specially-crafted packet, a remote attacker could exploit this vulnerability to obtain information.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/148731 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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. For version 3.1, see https://ibm.biz/BdHggw. This issue is addressed starting with v3.1.0.2 update 16.
Workarounds and Mitigations
none
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References
Change History
28 September 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:
17 December 2018
UID
ibm10741045