Security Bulletin: IBM QRadar SIEM is vulnerable to denial of service attack due to CVE-2021-39041

Summary

The Common and TCPMultilineSyslog protocol components as used by IBM QRadar SIEM contain vulnerabilities which may allow for denial of service attacks. IBM has addressed the relevant CVE.

Vulnerability Details

CVEID:CVE-2021-39041
**DESCRIPTION:**IBM QRadar SIEM may be vulnerable to partial denial of service attack, resulting in some protocols not listening to specified ports.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/214028 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

All PROTOCOL-Common versions before PROTOCOL-Common-7.3-20220608132603

All PROTOCOL-TCPMultilineSyslog versions before PROTOCOL-TCPMultilineSyslog-7.3-20220531145432

IBM QRadar SIEM v7.4|

All PROTOCOL-Common versions before PROTOCOL-Common-7.4-20220608234024

All PROTOCOL-TCPMultilineSyslog versions before PROTOCOL-TCPMultilineSyslog-7.4-20220531145346

IBM QRadar SIEM v7.5|

All PROTOCOL-Common versions before PROTOCOL-Common-7.5-20220608234038

All PROTOCOL-TCPMultilineSyslog versions before PROTOCOL-TCPMultilineSyslog-7.5-20220531145302

Remediation/Fixes

IBM encourages customers to update their systems promptly.

See the Related Information section below for instructions on verifying your currently installed version.

Product|Versions|

Fix

—|—|—
IBM QRadar SIEM| 7.3|

PROTOCOL-Common-7.3-20220608132603

PROTOCOL-TCPMultilineSyslog-7.3-20220531145432

IBM QRadar SIEM| 7.4|

PROTOCOL-Common-7.4-20220608234024

PROTOCOL-TCPMultilineSyslog-7.4-20220531145346

IBM QRadar SIEM| 7.5|

PROTOCOL-Common-7.5-20220608234038

PROTOCOL-TCPMultilineSyslog-7.5-20220531145302

Workarounds and Mitigations

None