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AUSCERT External Security Bulletin Redistribution
ESB-2020.0533
Security Bulletin: Security Vulnerabilities affect IBM Cloud Private -
Kubernetes (CVE-2019-17110, CVE-2019-10223, CVE-2019-11253)
18 February 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Cloud Private
Publisher: IBM
Operating System: Linux variants
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-17110 CVE-2019-11253 CVE-2019-10223
Reference: ESB-2019.4368
ESB-2019.4198
ESB-2019.4004
ESB-2019.3900
Original Bulletin:
https://www.ibm.com/support/pages/node/2495349
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Security Vulnerabilities affect IBM Cloud Private - Kubernetes (CVE-2019-17110,
CVE-2019-10223, CVE-2019-11253)
Security Bulletin
Summary
Security Vulnerabilities affect IBM Cloud Private - Kubernetes
Vulnerability Details
CVEID: CVE-2019-17110
DESCRIPTION: A security issue was discovered in kube-state-metrics 1.7.x before
1.7.2. An experimental feature was added to v1.7.0 and v1.7.1 that enabled
annotations to be exposed as metrics. By default, kube-state-metrics metrics
only expose metadata about Secrets. However, a combination of the default
kubectl behavior and this new feature can cause the entire secret content to
end up in metric labels, thus inadvertently exposing the secret content in
metrics.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
168365 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2019-10223
DESCRIPTION: A security issue was discovered in the kube-state-metrics versions
v1.7.0 and v1.7.1. An experimental feature was added to the v1.7.0 release that
enabled annotations to be exposed as metrics. By default, the
kube-state-metrics metrics only expose metadata about Secrets. However, a
combination of the default `kubectl` behavior and this new feature can cause
the entire secret content to end up in metric labels thus inadvertently
exposing the secret content in metrics. This feature has been reverted and
released as the v1.7.2 release. If you are running the v1.7.0 or v1.7.1
release, please upgrade to the v1.7.2 release as soon as possible.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
165077 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2019-11253
DESCRIPTION: Improper input validation in the Kubernetes API server in versions
v1.0-1.12 and versions prior to v1.13.12, v1.14.8, v1.15.5, and v1.16.2 allows
authorized users to send malicious YAML or JSON payloads, causing the API
server to consume excessive CPU or memory, potentially crashing and becoming
unavailable. Prior to v1.14.0, default RBAC policy authorized anonymous users
to submit requests that could trigger this vulnerability. Clusters upgraded
from a version prior to v1.14.0 keep the more permissive policy by default for
backwards compatibility.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
168618 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
+--------------------+----------+
|Affected Product(s) |Version(s)|
+--------------------+----------+
|IBM Cloud Private |3.2.0 CD |
+--------------------+----------+
|IBM Cloud Private |3.2.1 CD |
+--------------------+----------+
Remediation/Fixes
Product defect fixes and security updates are only available for the two most
recent Continuous Delivery (CD) update packages
o IBM Cloud Private 3.2.0
o IBM Cloud Private 3.2.1
For IBM Cloud Private 3.2.0, apply January Fixpack:
o IBM Cloud Private 3.2.0.2001 fixpack
For IBM Cloud Private 3.2.1, apply January Fixpack:
o IBM Cloud Private 3.2.1.2001 fixpack
For IBM Cloud Private 3.1.0, 3.1.1, 3.1.2:
o Upgrade to the latest Continuous Delivery (CD) update package, IBM Cloud
Private 3.2.1.
o 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
Get Notified about Future Security Bulletins
References
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