Security Bulletin
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
| Affected Product(s) | Version(s) |
| IBM Cloud Pak System | V2.3 - V2.3.3.3 |
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
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
14 July 2021: Initial Publication
*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:
19 July 2021
UID
ibm16439521