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Eclipse Temurin 8.0.452 release notes

Red Hat build of OpenJDK 8

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Abstract

The release notes for Eclipse Temurin 8.0.452 provide an overview of new features in OpenJDK 8 and a list of potential known issues and possible workarounds.

Preface

Open Java Development Kit (OpenJDK) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE). Eclipse Temurin is available in four LTS versions: OpenJDK 8u, OpenJDK 11u, OpenJDK 17u, and OpenJDK 21u.

Binary files for Eclipse Temurin are available for macOS, Microsoft Windows, and multiple Linux x86 Operating Systems including Red Hat Enterprise Linux and Ubuntu.

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Chapter 1. Support policy for Eclipse Temurin

Red Hat will support select major versions of Eclipse Temurin in its products. For consistency, these are the same versions that Oracle designates as long-term support (LTS) for the Oracle JDK.

A major version of Eclipse Temurin will be supported for a minimum of six years from the time that version is first introduced. For more information, see the Eclipse Temurin Life Cycle and Support Policy.

Note

RHEL 6 reached the end of life in November 2020. Because of this, Eclipse Temurin does not support RHEL 6 as a supported configuration.

Chapter 2. Eclipse Temurin features

Eclipse Temurin does not contain structural changes from the upstream distribution of OpenJDK.

For the list of changes and security fixes that the latest OpenJDK 8 release of Eclipse Temurin includes, see OpenJDK 8u452 Released.

New features and enhancements

Eclipse Temurin 8.0.452 includes the following new features and enhancements.

Warnings from jarsigner tool about removed file entries

In earlier OpenJDK releases, when a file was removed from a signed JAR file but the file signature was still present, the jarsigner tool did not detect this situation.

In OpenJDK 8.0.452, you can use the jarsigner ‑verify command to check that every signature has a matching file entry. If any mismatch exists, this command prints a warning. To display the names of any mismatched entries, add the ‑verbose option to the command.

See JDK-8309841 (JDK Bug System).

Distrust of TLS server certificates issued after 15 April 2025 and anchored by Camerfirma root CAs

In accordance with similar plans that Google, Mozilla, Apple, and Microsoft recently announced, OpenJDK 8.0.452 distrusts TLS certificates that are issued after 15 April 2025 and anchored by Camerfirma root certificates.

OpenJDK will continue to trust certificates that are issued on or before 15 April 2025 until these certificates expire.

If a server’s certificate chain is anchored by an affected certificate, any attempts to negotiate a TLS session now fail with an exception to indicate that the trust anchor is not trusted. For example: 

TLS server certificate issued after 2025-04-15 and anchored by a distrusted legacy Camerfirma root CA: CN=Chambers of Commerce Root -
2008, O=AC Camerfirma S.A., SERIALNUMBER=A82743287, L=Madrid (see current address at www.camerfirma.com/address), C=EU

You can check whether this change affects a certificate in a JDK keystore by using the following keytool command:

keytool -v -list -alias <your_server_alias> -keystore <your_keystore_filename>

If this change affects any certificate in the chain, update this certificate or contact the organisation that is responsible for managing the certificate.

If you want to continue using TLS server certificates that are anchored by Camerfirma root certificates, you can remove CAMERFIRMA_TLS from the jdk.security.caDistrustPolicies security property either by modifying the java.security configuration file or by using the java.security.properties system property.

Note

Continued use of the distrusted TLS server certificates is at your own risk.

These restrictions apply to the following Camerfirma root certificates that OpenJDK includes:

Certificate 1
  • Alias name: camerfirmachamberscommerceca [jdk]
  • Distinguished name: CN=Chambers of Commerce Root OU=http://www.chambersign.org O=AC Camerfirma SA CIF A82743287 C=EU
  • SHA256: 0C:25:8A:12:A5:67:4A:EF:25:F2:8B:A7:DC:FA:EC:EE:A3:48:E5:41:E6:F5:CC:4E:E6:3B:71:B3:61:60:6A:C3
Certificate 2
  • Alias name: camerfirmachambersca [jdk]
  • Distinguished name: CN=Chambers of Commerce Root - 2008 O=AC Camerfirma S.A. SERIALNUMBER=A82743287 L=Madrid (see current address at www.camerfirma.com/address) C=EU
  • SHA256: 06:3E:4A:FA:C4:91:DF:D3:32:F3:08:9B:85:42:E9:46:17:D8:93:D7:FE:94:4E:10:A7:93:7E:E2:9D:96:93:C0
Certificate 3
  • Alias name: camerfirmachambersignca [jdk]
  • Distinguished name: CN=Global Chambersign Root - 2008 O=AC Camerfirma S.A. SERIALNUMBER=A82743287 L=Madrid (see current address at www.camerfirma.com/address) C=EU
  • SHA256: 13:63:35:43:93:34:A7:69:80:16:A0:D3:24:DE:72:28:4E:07:9D:7B:52:20:BB:8F:BD:74:78:16:EE:BE:BA:CA

See JDK-8346587 (JDK Bug System).

IANA time zone database updated to version 2024b

In OpenJDK 8.0.452, the in-tree copy of the Internet Assigned Numbers Authority (IANA) time zone database is updated to version 2024b. This update is primarily concerned with improving historical data for Mexico, Monogolia, and Portugal.

This update to the IANA database also includes the following changes:

  • Asia/Choibalsan is an alias for Asia/Ulaanbaatar.
  • The Middle European Time (MET) time zone is equal to Central European Time (CET).

  • Some legacy time-zone IDs are mapped to geographical names rather than fixed offsets:

    • Eastern Standard Time (EST) is mapped to America/Panama rather than -5:00.
    • Mountain Standard Time (MST) is mapped to America/Phoenix rather than -7:00.
    • Hawaii Standard Time (HST) is mapped to Pacific/Honolulu rather than -10:00.

    OpenJDK overrides the change in the legacy time-zone ID mappings by retaining the existing fixed-offset mapping.

See JDK-8339637 (JDK Bug System).

Revised on 2025-04-29 11:34:49 UTC

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