Security Bulletin: Vulnerabilities in Docker affect IBM Cloud Pak System

Summary

Vulnerabilities were identified within Docker shipped as pType component with Cloud Pak System Software. IBM Cloud Pak System Software addressed these vulnerabilities.

Vulnerability Details

CVEID:CVE-2021-21285
**DESCRIPTION:**Docker is vulnerable to a denial of service, caused by improper input validation. By persuading a victim to pull a specially-crafted Docker image, a remote attacker could exploit this vulnerability to cause the dockerd daemon to crash, and results in a denial of service condition.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/196049 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

CVEID:CVE-2021-21284
**DESCRIPTION:**Docker could allow a remote authenticated attacker to gain elevated privileges on the system, caused by a flaw when using the --userns-remap option. By sending a specially-crafted request, an authenticated attacker could exploit this vulnerability to gain elevated privileges as root on the system.
CVSS Base score: 8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/196047 for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Remediation/Fixes

For earlier and unsupported versions of the products, IBM recommends upgrading to a fixed, supported version of the product.

The recommended solution is to apply the applicable IBM Cloud Pak System Interim Fix as soon as practical.

IBM Cloud Pak System V2.3.3.3 Interim Fix 1 provides ptype docker v20.10.3.

For IBM Cloud Pak System V2.3.0.1 - V2.3.3.0,

- Upgrade to IBM Cloud Pak System V2.3.3.3

- apply v2.3.3.3 Interim Fix 1 as available at Fix Central.

For IBM Cloud Pak System V2.3.3.3

- Apply v2.3.3.3 Interim Fix 1 as available at Fix Central.

Information on upgrading here: https://www.ibm.com/support/pages/node/887959

Workarounds and Mitigations

None