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

Security Bulletin

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

Affected Product(s)	Version(s)
IBM QRadar SIEM v7.3	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

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References

Complete CVSS v3 Guide
On-line Calculator v3

Off

These files were released as part of the 29 June 2022 auto update bundle. Administrators can confirm the protocol version installed on the Console from the Auto Update interface on the Admin tab or using yum info Protocol-Common and yum info Protocol-TCPMultilineSyslogfrom the command-line interface to confirm the latest version is installed.

For example:


[root@examplehost]# yum info Protocol-Common
Loaded plugins: product-id, search-disabled-repos
Installed Packages
Name        : PROTOCOL-Common
Arch        : noarch
Version     : 7.5
Release     : 20220608234038
Size        : 3.4 M
Repo        : installed
From repo   : /PROTOCOL-Common-7.5-20220608234038.noarch
Summary     : PROTOCOL Protocol source common library Install
License     : Proprietary.
Description : This program installs a Protocol source common library PROTOCOL plugin.

[root@examplehost]# yum info Protocol-TCPMultilineSyslog
Loaded plugins: product-id, search-disabled-repos
Installed Packages
Name        : PROTOCOL-TCPMultilineSyslog
Arch        : noarch
Version     : 7.5
Release     : 20220531145302
Size        : 436 k
Repo        : installed
From repo   : /PROTOCOL-TCPMultilineSyslog-7.5-20220531145302.noarch
Summary     : PROTOCOL TCP Multiline Syslog Protocol Install
License     : Proprietary.
Description : This program installs a TCP Multiline Syslog Protocol PROTOCOL plugin.

Acknowledgement

Change History

11 Jul 2022: 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.

Disclaimer

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

Document Location

Worldwide

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Tips

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