Security Bulletin: IBM MQ Appliance potentially vulnerable to a denial of service (CVE-2023-2650)

Summary

IBM MQ Appliance has addressed a denial of service vulnerability.

Vulnerability Details

CVEID:CVE-2023-2650
**DESCRIPTION:**OpenSSL is vulnerable to a denial of service, caused by a flaw when using OBJ_obj2txt() directly, or use any of the OpenSSL subsystems OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS with no message size limit. By sending a specially crafted request, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/256611 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

Remediation/Fixes

This vulnerability is addressed under IT43897

IBM strongly recommends addressing the vulnerability now.

IBM MQ Appliance version 9.2 LTS

Apply IBM MQ Appliance 9.2.0.16 cumulative security update, or later firmware.

IBM MQ Appliance version 9.3 LTS

Apply IBM MQ Appliance 9.3.0.10 fix pack, or later firmware.

IBM MQ Appliance version 9.3 CD

Apply IBM MQ Appliance 9.3.3.1 cumulative security update, or later firmware.

Workarounds and Mitigations

None