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Security Bulletin: Apache Tomcat as used in IBM QRadar SIEM is vulnerable to denial of service (CVE-2019-0199)

Security Bulletin


Open source Apache Tomcat vulnerable to a publicly disclosed vulnerability

Vulnerability Details

CVEID: CVE-2019-0199
Description: Apache Tomcat is vulnerable to a denial of service, caused by the acceptance of streams with excessive numbers of SETTINGS frames and the permitting of clients to keep streams open without reading/writing request data by the HTTP/2 implementation. By sending excessive SETTINGS frames, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 7.5
CVSS Temporal Score: See for the current score
CVSS Environmental Score: *Undefined

Affected Products and Versions

IBM QRadar SIEM 7.3.0 - 7.3.2 Patch 1


Workarounds and Mitigations


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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

May 31st, 2019: First Publish

*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 information

More support for: IBM QRadar SIEM

Software version: 7.3

Operating system(s): Linux

Software edition: All Editions

Reference #: 0886317

Modified date: 31 May 2019