Security Bulletin: IBM MQ Blockchain bridge is vulnerable to multiple issues within protobuf-java-core (CVE-2022-3510, CVE-2022-3509)

Summary

Multiple issues were identified within protobuf-java-core which is used by fabric gateway which is used by IBM MQ Blockchain bridge to provide Blockchain functionality to IBM MQ.

Vulnerability Details

CVEID:CVE-2022-3510
**DESCRIPTION:**protobuf-java core and lite are vulnerable to a denial of service, caused by a flaw in the parsing procedure for Message-Type Extensions. By sending non-repeated embedded messages with repeated or unknown fields, a remote authenticated attacker could exploit this vulnerability to cause long garbage collection pauses.
CVSS Base score: 5.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/239916 for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2022-3509
**DESCRIPTION:**protobuf-java core and lite are vulnerable to a denial of service, caused by a flaw in the parsing procedure for textformat data. By sending non-repeated embedded messages with repeated or unknown fields, a remote authenticated attacker could exploit this vulnerability to cause long garbage collection pauses.
CVSS Base score: 5.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/239915 for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

The following installable MQ components are affected by the vulnerability:

- IBM MQ Bridge to Blockchain

If you are running any of these listed components, please apply the remediation/fixes as described below. For more information on the definitions of components used in this list see <https://www.ibm.com/support/pages/installable-component-names-used-ibm-mq-security-bulletins&gt;

Remediation/Fixes

This issue was resolved under APAR 42343.

IBM MQ Version 9.2 LTS

Apply fix pack 9.2.0.7

IBM MQ Version 9.3 LTS

Apply fix pack 9.3.0.2

IBM MQ 9.2 and 9.3 CD

Upgrade to IBM MQ version 9.3.2

Workarounds and Mitigations

None