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Security Bulletin: A vulnerability has been identified in IBM Elastic Storage Server where an attacker could cause a denial of service (CVE-2020-5015)

Security Bulletin


A security vulnerability has been identified in all levels of IBM Elastic Storage Server that could allow an attacker to cause a denial of service. A fix for this vulnerability is available.

Vulnerability Details

CVEID:   CVE-2020-5015
DESCRIPTION:   IBM Elastic Storage System could allow a remote attacker to cause a denial of service by sending malformed UDP requests.
CVSS Base score: 7.5
CVSS Temporal Score: See: 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 Elastic Storage Server5.3.0 -


For IBM Elastic Storage Server V5.3.0 thru, apply V5.3.7 available from FixCentral at:

And then enable security on these system using the security tool provided in these release by running below steps :

- To enable security, from the container, run the command:

        # ./gss_security -e

   where <node_name> is the node on which security needs to be enabled.

- You can verify it has been enabled by running the command,

        # ./gss_security -c

Workarounds and Mitigations


Get Notified about Future Security Bulletins




Change History

18 Mar 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.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location


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Document Information

Modified date:
23 March 2021