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October 15, 2019
JDK 13 Update Release Notes
The full version string for this update release is 13.0.1+9 (where "+" means "build"). The version number is 13.0.1.
JDK 13.0.1 contains IANA time zone data version 2019b. For more information, refer to Timezone Data Versions in the JRE Software.
The security baselines for the Java Runtime Environment (JRE) at the time of the release of JDK 13.0.1 are specified in the following table:
|JRE Family Version||JRE Security Baseline
(Full Version String)
Oracle recommends that the JDK is updated with each Critical Patch Update (CPU). In order to determine if a release is the latest, the Security Baseline page can be used to determine which is the latest version for each release family.
Critical patch updates, which contain security vulnerability fixes, are announced one year in advance on Critical Patch Updates, Security Alerts and Bulletins. It is not recommended that this JDK (version 13.0.1) be used after the next critical patch update scheduled for January 14, 2020.
Changes introduced in macOS 10.15 (Catalina) have caused JCK test failures which will prevent Java from being supported on macOS 10.15. If you still want to install and test then please see http://www.oracle.com/java/technologies/javase/jdk-jre-macos-catalina.html.
JDK-8230057 (not public)
This change removes obsolete NIST EC curves from the default Named Groups used during TLS negotiation. The curves removed are sect283k1, sect283r1, sect409k1, sect409r1, sect571k1, sect571r1, and secp256k1.
To re-enable these curves, use the
jdk.tls.namedGroups system property. The property contains a comma-separated list within quotation marks of enabled named groups in preference order. For example:
java -Djdk.tls.namedGroups="x25519, secp256r1, secp384r1, secp521r1, x448, sect283k1, sect283r1, sect409k1, sect409r1, sect571k1, sect571r1, secp256k1, ffdhe2048, ffdhe3072, ffdhe4096, ffdhe6144, ffdhe8192" ...
JDK-8228825 (not public)
A number of bugs have been reported against Dark Mode on macOS which require a fix in the JavaRuntimeSupport framework (JRS); an issue has been filed with Apple:
FB6798883: The JavaRuntimeSupport.framework does not work properly in Dark Mode
ProcessBuilder have been updated in this release to tighten the constraints on the quoting of arguments to processes created by these APIs. The changes may impact applications on Microsoft Windows that are deployed with a security manager. The changes have no impact on applications that are run without a security manager.
In applications where there is no security manager, there is no change in the default behavior and the new restrictions are opt-in. To enable the restrictions, set the system property
In applications where there is a security manager, the new restrictions are opt-out. To revert to the previous behavior set the system property
ProcessBuilder with a security manager to invoke
.cmd and command names that do not end in "
.exe" may be more restrictive in the characters accepted for arguments if they contain double-quote, "&", "|", "<", ">", or "^". The arguments passed to applications may be quoted differently than in previous versions.
.exe programs, embedded double quotes are allowed and are encoded so they are passed to Windows as literal quotes. In the case where the entire argument has been passed with quotes or must be quoted to encode special characters including space and tab, the encoding ensures they are passed to the application correctly. The restrictions are enforced if there is a security manager and the
jdk.lang.Process.allowAmbiguousCommands property is "
false" or there is no security manager and property is not "
JDK-8221858 (not public)
This release also contains fixes for security vulnerabilities described in the Oracle Critical Patch Update.