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Security Bulletin: Vulnerabilities in WebSphere liberty related to DOS

Security Bulletin


There are vulnerabilities in WebSphere liberty related to DOS used by IBM Streams. IBM Streams has addressed the applicable CVEs.

Vulnerability Details

CVEID:   CVE-2019-4720
DESCRIPTION:   IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume all available memory. IBM X-Force ID: 172125.
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)
InfoSphere Streams4.1.1.x
InfoSphere Streams4.2.1.x
InfoSphere Streams4.3.1.x


NOTE: Fix Packs are available on IBM Fix Central.

To remediate/fix this issue, follow the instructions below:

Version 4.3.x:  Apply 4.3.0 Fix Pack 1 ( or higher .
Version 4.2.x:  Apply  4.2.1 Fix Pack 4 ( or higher .
Version 4.1.x:  Apply  4.1.1 Fix Pack 6 ( or higher .
Versions 4.0.x,3.2.x, 3.1.x, and 3.0.x:  For versions earlier than 4.x.x, IBM recommends upgrading to a fixed, supported version/release/platform of the product. Customers who cannot upgrade and need to secure their installation should open a PMR with IBM Technical Support and request assistance securing their InfoSphere Streams system against the vulnerabilities identified in this Security Bulletin.


Workarounds and Mitigations


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Change History

07 May 2020: 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.


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":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSCRJU","label":"IBM Streams"},"Component":"","Platform":[{"code":"PF016","label":"Linux"}],"Version":"4.1.1,4.2.1,4.3.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
21 May 2020