Security Bulletin: IBM Cloud Private is vulnerable to etcd vulnerabilities (CVE-2020-15106, CVE-2020-15112, CVE-2020-15113)

Summary

IBM Cloud Private is vulnerable to etcd vulnerabilities

Vulnerability Details

CVEID:CVE-2020-15106
**DESCRIPTION:**etcd is vulnerable to a denial of service, caused by improper data validation in the decodeRecord method. By sending a specially crafted data, a remote authenticated attacker could exploit this vulnerability to cause panic in decodeRecord method,
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/186329 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2020-15112
**DESCRIPTION:**etcd is vulnerable to a denial of service, caused by a flaw in the ReadAll method in wal/wal.go. By sending a specially crafted data, a remote authenticated attacker could exploit this vulnerability to cause a runtime panic.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/186328 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2020-15113
**DESCRIPTION:**etcd could allow a remote attacker to bypass security restrictions, caused by the lack of permission checks in the os.MkdirAll function when a given directory path exists already. By sending a specially crafted request, an attacker could exploit this vulnerability to bypass access restrictions.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/186327 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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 3.2.2

For IBM Cloud Private 3.2.1, the defect fixes for Kubernetes requires an update to the Kubernetes version. First apply the 3.2.1.2003 fix pack and then apply either the 3.2.2.2006 fixpack or the 3.2.2.2008 fixpack. Then apply the 3.2.2.2012 fixpack. The 3.2.2.2006 or the 3.2.2.2008 fixpack updates Kubernetes from version 1.13.12 to 1.16.7. The 3.2.2.2012 updates Kubernetes from version 1.16.7 to 1.19

• IBM Cloud Private 3.2.1.2003
• IBM Cloud Private 3.2.2.2006
• IBM Cloud Private 3.2.2.2008

For IBM Cloud Private 3.2.2, apply fix pack:

• IBM Cloud Private 3.2.2.2012

For IBM Cloud Private 3.1.0, 3.1.1, 3.1.2, 3.2.0:

• Upgrade to the latest Continuous Delivery (CD) update package, IBM Cloud Private 3.2.2.
• 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