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Ubuntu 23.10 USN-6662-1 Critical: OpenJDK 21 Denial of Service

ubuntu
Calendar Grey February 27, 2024
Dist Ubuntu Esm H88
Ubuntu 20.04, 22.04, and 23.10 have received security updates that address significant vulnerabilities found in OpenJDK 21, ensuring better protection for Java applications.
Several security issues were fixed in OpenJDK 21.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in OpenJDK 21. Software Description: - openjdk-21: Open Source Java implementation Details: Yi Yang discovered that the Hotspot component of OpenJDK 21 incorrectly handled array accesses in the C1 compiler. An attacker could possibly use this issue to cause a denial of service, execute arbitrary code or bypass Java sandbox restrictions. (CVE-2024-20918) It was discovered that the Hotspot component of OpenJDK 21 did not properly verify bytecode in certain situations. An attacker could possibly use this issue to bypass Java sandbox restrictions. (CVE-2024-20919) It was discovered that the Hotspot component of OpenJDK 21 had an optimization flaw when generating range check loop predicates. An attacker could possibly use this issue to cause a denial of service, execute arbitrary code ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu java sandbox bypass openjdk-21

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 23.10: openjdk-21-jdk 21.0.2+13-1~23.10.1 openjdk-21-jdk-headless 21.0.2+13-1~23.10.1 openjdk-21-jre 21.0.2+13-1~23.10.1 openjdk-21-jre-headless 21.0.2+13-1~23.10.1 openjdk-21-jre-zero 21.0.2+13-1~23.10.1 Ubuntu 22.04 LTS: openjdk-21-jdk 21.0.2+13-1~22.04.1 openjdk-21-jdk-headless 21.0.2+13-1~22.04.1 openjdk-21-jre 21.0.2+13-1~22.04.1 openjdk-21-jre-headless 21.0.2+13-1~22.04.1 openjdk-21-jre-zero 21.0.2+13-1~22.04.1 Ubuntu 20.04 LTS: openjdk-21-jdk 21.0.2+13-1~20.04.1 openjdk-21-jdk-headless 21.0.2+13-1~20.04.1 openjdk-21-jre 21.0.2+13-1~20.04.1 openjdk-21-jre-headless 21.0.2+13-1~20.04.1 openjdk-21-jre-zero 21.0.2+13-1~20.04.1 This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart any Java applications to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6662-1

CVE-2024-20918, CVE-2024-20919, CVE-2024-20921, CVE-2024-20945,

CVE-2024-20952

Severity
critical
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Critical

Ubuntu Security Notice USN-6662-1

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu java sandbox bypass openjdk-21

Package Information

https://launchpad.net/ubuntu/+source/openjdk-21/21.0.2+13-1~23.10.1 https://launchpad.net/ubuntu/+source/openjdk-21/21.0.2+13-1~22.04.1 https://launchpad.net/ubuntu/+source/openjdk-21/21.0.2+13-1~20.04.1

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