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Security Bulletin: IBM MQ Appliance is vulnerable to an issue in IBM GSKit (CVE-2023-32342)

Security Bulletin


Summary

IBM MQ Appliance has resolved a vulnerability in IBM GSKit.

Vulnerability Details

CVEID:   CVE-2023-32342
DESCRIPTION:   IBM GSKit could allow a remote attacker to obtain sensitive information, caused by a timing-based side channel in the RSA Decryption implementation. By sending an overly large number of trial messages for decryption, an attacker could exploit this vulnerability to obtain sensitive information. IBM X-Force ID: 255828.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/255828 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Affected Product(s) Version(s)
IBM MQ Appliance 9.2 LTS
IBM MQ Appliance 9.2 CD
IBM MQ Appliance 9.3 LTS
IBM MQ Appliance 9.3 CD

Remediation/Fixes

This vulnerability is addressed under IT43802
IBM strongly recommends addressing the vulnerability now.
IBM MQ Appliance version 9.2 LTS
Apply IBM MQ Appliance 9.2.0.15 fix pack, or later firmware.
IBM MQ Appliance version 9.2 CD
IBM MQ Appliance version 9.3 LTS
IBM MQ Appliance version 9.3 CD

Workarounds and Mitigations

All versions of MQ can mitigate the vulnerability by avoiding the use of affected CipherSpecs.  The vulnerable CipherSpecs are those whose name begins TLS_RSA_*. 

See Enabling CipherSpecs for a list of currently supported CipherSpecs.

Get Notified about Future Security Bulletins

References

Off

Change History

28th June 2023: 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

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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
28 June 2023

UID

ibm17007741