The following data is constructed from data provided by Red Hat's json file at:

https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_6738.json

Red Hat officially shut down their mailing list notifications October 10, 2023.  Due to this, Packet Storm has recreated the below data as a reference point to raise awareness.  It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.

- Packet Storm Staff




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Red Hat Security Advisory

Synopsis:           Moderate: java-21-openjdk security and bug fix update
Advisory ID:        RHSA-2023:6738-01
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2023:6738
Issue date:         2023-11-07
Revision:           01
CVE Names:          CVE-2023-22025
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Summary: 

An update for java-21-openjdk is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.




Description:

The java-21-openjdk packages provide the OpenJDK 21 Java Runtime Environment and the OpenJDK 21 Java Software Development Kit.

Security Fix(es):

* OpenJDK: memory corruption issue on x86_64 with AVX-512 (8317121) (CVE-2023-22025)

* OpenJDK: certificate path validation issue during client authentication (8309966) (CVE-2023-22081)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

* Additional validity checks in the handling of Zip64 files, JDK-8302483, were introduced in the 21.0.0 release of OpenJDK, causing the use of some valid zip files to now fail with an error. This release, 21.0.1, allows for zero-length headers and additional padding produced by some Zip64 creation tools. With both releases, the checks can be disabled using -Djdk.util.zip.disableZip64ExtraFieldValidation=true.

* A maximum signature file size property, jdk.jar.maxSignatureFileSize, was introduced in the 20.0.0 release of OpenJDK by JDK-8300596, with a default of 8 MB. This default proved to be too small for some JAR files. This release, 20.0.1, increases it to 16 MB. (RHEL-14954)

* When Transparent Huge Pages (THP) are unconditionally enabled on a system, Java applications using many threads were found to have a large Resident Set Size (RSS). This was due to a race between the kernel transforming thread stack memory into huge pages and the Java Virtual Machine (JVM) shattering these pages into smaller ones when adding a guard page. This release resolves this issue by getting glibc to insert a guard page and prevent the creation of huge pages. (RHEL-14962)

* Installing the same java-21-openjdk-headless package on two different systems resulted in distinct classes.jsa files getting generated. This was because the CDS archive was being generated by a post script action of the java-21-openjdk-headless package. This prevented the use of the dynamic dump feature, because the checksum in the archive would be different on each system. This release resolves this issue by using the .jsa files generated during the initial build. (RHEL-14946)

* The /usr/bin/jfr alternative is now owned by the java-21-openjdk package. (RHEL-14959)

* The jcmd tool is now provided by the java-21-openjdk-headless package, rather than java-21-openjdk-devel, to make it more accessible. (RHEL-14948)


Solution:

https://access.redhat.com/articles/11258



CVEs:

CVE-2023-22025

References:

https://access.redhat.com/security/updates/classification/#moderate