Security Bulletin: Multiple Vulnerabilities in IBM® Java SDK affects Liberty for Java for IBM Cloud due to the January 2023 CPU plus deferred CVE-2022-21426

Summary

There are multiple vulnerabilities in the IBM® SDK, Java™ Technology Edition that is shipped with Liberty for Java for IBM Cloud. This product has addressed the applicable CVEs. If you run your own Java code using the IBM Java Runtime delivered with this product, you should evaluate your code to determine whether the complete list of vulnerabilities is applicable to your code. For a complete list of vulnerabilities, refer to the link for “IBM Java SDK Security Bulletin” located in the References section for more information.

Vulnerability Details

CVEID:CVE-2023-21830
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Serialization component could allow a remote attacker to cause a denial of service resulting in a low integrity impact using unknown attack vectors.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/245038 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2023-21843
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Sound component could allow a remote attacker to cause a denial of service resulting in a low integrity impact using unknown attack vectors.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/245037 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2022-21426
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the JAXP component could allow an unauthenticated attacker to cause a denial of service resulting in a low availability impact using unknown attack vectors.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/224714 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Remediation/Fixes

To upgrade to Liberty for Java for IBM Cloud v4.1-20230516-0914 or higher, you must re-stage or re-push your application

To find the current version of Liberty for Java for IBM Cloud being used, from the command-line Cloud Foundry client by running the following commands:

cf ssh <appname> -c “cat staging_info.yml”

Look for similar lines:

{“detected_buildpack”:“Liberty for Java™ (WAR, liberty-xxx, v4.1-20230516-0914, xxx, env)“,”start_command”:“.liberty/initial_startup.rb”}

To re-stage your application using the command-line Cloud Foundry client, use the following command:

cf restage <appname>

To re-push your application using the command-line Cloud Foundry client, use the following command:

cf push <appname>

Workarounds and Mitigations

None