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ibmIBM5ADDCDCCBCAA61DA8CF5B02CB5B449E5A5F2BFFE2D509DF07ECBF25E4F3493E4
HistoryJan 08, 2020 - 4:47 p.m.

Security Bulletin: A security vulnerability has been identified in Kubernetes shipped with PowerAI Vision

2020-01-0816:47:26
www.ibm.com
12

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

Summary

Multiple vulnerabilities (CVE-2019-11251, CVE-2019-11253) in Kubernetes package.

Vulnerability Details

CVEID:CVE-2019-11251
**DESCRIPTION:**Kubernetes could allow a remote attacker to gain unauthorized access to the system, caused by an error in kubectl cp that allows a combination of two symlinks to copy a file outside of its destination directory. An attacker could exploit this vulnerability to write arbitrary files outside of the destination tree.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/168617 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/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 PowerAI Vision 1.1.3
IBM PowerAI Vision 1.1.4

Remediation/Fixes

Kubernetes has been upgraded in PowerAI Vision 1.1.5 to a level that addresses this vulnerability.

Workarounds and Mitigations

None

CPENameOperatorVersion
ibm powerai visioneq1.1.4

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

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