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Security Bulletin: Vulnerability in PyYAML affects IBM Spectrum Protect Plus Container and Microsoft File Systems Agents (CVE-2020-1747)

Security Bulletin


There is a vulnerability in PyYAML that could allow a remote attacker to execute arbitrary code on the system. This vulnerability may affect the IBM Spectrum Protect Plus Container agent for Kubernetes and the IBM Spectrum Protect Plus Microsoft® Windows File Systems agent.

Vulnerability Details

CVEID:   CVE-2020-1747
DESCRIPTION:   PyYAML could allow a remote attacker to execute arbitrary code on the system, caused by an error when processing untrusted YAML files through the full_load method or with the FullLoader loader. By abusing the python/object/new constructor, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 9.8
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Spectrum Protect Plus Container Agent for Kubernetes (Linux)10.1.5-10.1.6
IBM Spectrum Protect Plus Microsoft File Systems Agent (Windows)10.1.6


Spectrum Protect
Plus Release
First Fixing
VRM Level
PlatformLink to Fix
      10.1    10.1.7



Workarounds and Mitigations


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Change History

02 December 2020: Initial Publication;  03 December 2020: Updated to remove Container agent for OpenShift as it is not affected.

*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.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document Location


[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSNQFQ","label":"IBM Spectrum Protect Plus"},"Component":"Container, File Systems","Platform":[{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"10.1","Edition":"","Line of Business":{"code":"LOB26","label":"Storage"}}]

Document Information

Modified date:
04 December 2020