8/19/2023 0 Comments Use redhat openjdk with eclipseUpdated the default PKCS #12 MAC algorithm If you set the keep-alive property and the server specifies a keep-alive time for the Keep-Alive response header, the HTTP protocol handler uses the time specified by the server. If you want to remove the restriction on SHA-1 signed JARs for OpenJDK 11.0.17, and you accept the security risks, you can complete the following actions: If your JAR file is impacted by this restriction, you can remove the algorithm and re-sign the file with a stronger algorithm, such as SHA-256. =MD2, MD5, RSA keySize < 1024, DSA keySize < 1024, SHA1 denyAfter Ĭonsider replacing or re-signing any JARs affected by the new restrictions with stronger algorithms. WARNING: The jar will be treated as unsigned, because it is signed with a weak algorithm that is now disabled by the security property: Signature algorithm: SHA1withRSA (disabled), 2048-bit key Additionally, search for any warning messages that indicate that the JAR will be treated as unsigned. To determine if your JAR file is impacted by the restriction, you can issue the following command in your CLI:įrom the output of the previous command, search for instance of SHA1, SHA-1, or disabled. This exception might be removed in a future OpenJDK release. To reduce the compatibility risk for JARs that have been previously timestamped, the restriction does not apply to any JAR signed with SHA-1 algorithms and timestamped prior to January 01, 2019. Signature and digest algorithms of the certificates in the certificate chain of the code signer and the Timestamp Authority, and any Certificate Revocation Lists (CRLs) or Online Certificate Status Protocol (OCSP) responses that are used to verify if those certificates have been revoked.Īdditionally, the restrictions apply to signed Java Cryptography Extension (JCE) providers. These restrictions apply to the following algorithms:Īlgorithms used to digest, sign, and optionally timestamp the JAR. With the OpenJDK 11.0.17 release, JARs signed with SHA-1 algorithms are restricted by default and treated as if they were unsigned. The serialization filter mechanism of JFR can then determine whether to accept or reject a deserialized object from the monitored application. For example:Īfter you enable JFR and you configure JFR to monitor deserialization events, JFR creates an event whenever a monitored application attempts to deserialize an object. You can enable this feature by updating the event-name element in your JFR configuration. By default, OpenJDK 11.0.17 disables the jdk.deserialization event setting for JFR. You can now monitor deserialization of objects with the JDK Flight Recorder (JFR). Monitor deserialization of objects with JFR If the established connection for the service is reached, the service immediately closes the accepted connection. Set a positive value, such as 1, to cause the service to check any accepted connection against the current count of established connections. Set a value of 0 or a negative value, such as -1, to specify no connection limit for the service. If you want to revert this configuration, pass the -XX:+UseContainerCpuShares argument on JVM startup. The OpenJDK 11.0.17 release configures a JVM to no longer use the cpu.shares parameter when determining the number of threads for a thread pool. The parameter might cause a Java Virtual machine (JVM) to use fewer CPUs than available, which can impact the JVM’s CPU resources and performance when it operates inside a container. Review the following release notes to understand new features and feature enhancements included with the Eclipse Temurin 11.0.17 release:īefore the OpenJDK 11.0.17 release, OpenJDK used an incorrect interpretation of the cpu.shares parameter, which belongs to Linux control groups, also known as cgroups. Eclipse Temurin does not contain structural changes from the upstream distribution of OpenJDK.įor the list of changes and security fixes included in the latest OpenJDK 11.0.17 release of Eclipse Temurin, see OpenJDK 11.0.17 Released.
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