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Security Bulletin: IBM QRadar SIEM is vulnerable to DOS attack via malicious packets. (CVE-2015-5044)

Security Bulletin


QRadar Flow Collector DOS vulnerability while processing certain flows received from network

Vulnerability Details

CVE-ID: CVE-2015-5044

Description: IBM QRadar SIEM QFLOW component is susceptible to a DOS attack when an attacker sends certain packet types.

CVSS Base Score: 4.3
CVSS Temporal Score: See for the current score
CVSS Environmental Score: *Undefined

Affected Products and Versions

· IBM QRadar SIEM 7.2. n

· IBM QRadar SIEM 7.1.n


· IBM QRadar SIEM 7.2.5 Patch 4 Interim Fix 3

· IBM QRadar SIEM 7.1 MR2 Patch 11 Interim Fix 3

Workarounds and Mitigations


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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog


The vulnerability was reported to IBM by Christoph Kloos, NTT Com Security

*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

Component: Not Applicable

Software version: 7.1, 7.2

Operating system(s): Linux

Software edition: All Editions

Reference #: 1969422

Modified date: 16 June 2018