Security Bulletin: IBM Cloud Private for Data is affected multiple security vulnerabilities in IBM Cloud Private Kubernetes

Summary

IBM Cloud Private for Data is affected by multiple security vulnerabilites in Kubernetes which in some cases can allow unauthorized access to the Kubernetes API Server and/or trusted user privilege escalation.

Vulnerability Details

CVEID: CVE-2019-9946 DESCRIPTION: Kubernetes could provide weaker than expected security, caused by an interaction when paired with the embedded CNI (Container Networking Interface) that uses the portmap plugin. The portmap plugin inserts rules at the front of the iptables nat chains which would take precedence over the KUBE- SERVICES chain. The HostPort/portmap rule allows for matching of incoming traffic even if there are better fitting.
CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/158803&gt; 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:L/A:N)

CVEID: CVE-2019-1002101 DESCRIPTION: Kubernetes could allow a remote attacker to traverse directories on the system, caused by the improper handling of symlinks. By persuading a victim to use the kubectl cp command or the oc cp command with a malicious container, an attacker could replace or delete arbitrary files on the host machine.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/158804&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N)

Affected Products and Versions

IBM Cloud Private for Data 1.2.0

IBM Cloud Private for Data 1.2.1

IBM Cloud Private for Data 2.1.0

Remediation/Fixes

Product defect fixes and security updates are only available for the two most recent Continuous Delivery (CD) update packages

• IBM Cloud Private for Data 1.2.1
• IBM Cloud Private for Data 2.1.0

For IBM Cloud Private for Data 1.2.1:

• Apply the IBM Cloud Private Fix Pack for IBM Cloud Private V3.1.2 as directed in Security Bulletin <https://www-01.ibm.com/support/docview.wss?uid=ibm10878460&gt;

For IBM Cloud Private for Data 2.1.0

• Apply the IBM Cloud Private Fix Pack for IBM Cloud Private V3.1.2 as directed in Security Bulletin <https://www-01.ibm.com/support/docview.wss?uid=ibm10878460&gt;

For IBM Cloud Private for Data 1.1.x

• Upgrade to the latest Continuous Delivery release IBM Cloud Private for Data 2.1.0 and apply this fix patch.
• 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

None