Security Bulletin
Summary
Security Vulnerabilities affect IBM Cloud Private Kubernetes
Vulnerability Details
CVEID: CVE-2019-11247
DESCRIPTION: Kubernetes could allow a remote authenticated attacker to gain unauthorized access to the system, caused by an error in the API server. By sending a specially crafted request using the wrong scope, an attacker could exploit this vulnerability to create, view, update or delete the cluster-scoped resource.
CVSS Base Score: 8.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/164767 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2019-11249
DESCRIPTION: Kubernetes could allow a remote authenticated attacker to traverse directories on the system, caused by an incomplete fix for CVE-2019-1002101 and CVE-2019-11246. By persuading a victim to use the kubectl cp command with a malicious container, an attacker could replace or create arbitrary files on a users workstation.
CVSS Base Score: 6.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/164768 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
Remediation/Fixes
Product defect fixes and security updates are only available for the two most recent Continuous Delivery (CD) update packages
- IBM Cloud Private 3.2.1
- IBM Cloud Private 3.2.0
- Upgrade to the latest Continuous Delivery (CD) update package, IBM Cloud Private 3.2.1.
- If required, individual product fixes can be made available between CD update packages for resolution of problems. Contact IBM support for assistance
Workarounds and Mitigations
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Important Note
IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.
References
Change History
07 November 2019 - Original version published
23 November 2019 - Updated with fixpack
*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.
Document Location
Worldwide
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Document Information
Modified date:
23 November 2019
UID
ibm11074736