openjdk-21 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- 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:

Andy Boothe discovered that the Networking component of OpenJDK 21 did not
properly handle access under certain circumstances. An unauthenticated
attacker could possibly use this issue to cause a denial of service.
(CVE-2024-21208)

It was discovered that the Hotspot component of OpenJDK 21 did not properly
handle vectorization under certain circumstances. An unauthenticated
attacker could possibly use this issue to access unauthorized resources
and expose sensitive information. (CVE-2024-21210, CVE-2024-21235)

It was discovered that the Serialization component of OpenJDK 21 did not
properly handle deserialization under certain circumstances. An
unauthenticated attacker could possibly use this issue to cause a denial
of service. (CVE-2024-21217)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.10
openjdk-21-jdk 21.0.5+11-1ubuntu1~24.10
openjdk-21-jdk-headless 21.0.5+11-1ubuntu1~24.10
openjdk-21-jre 21.0.5+11-1ubuntu1~24.10
openjdk-21-jre-headless 21.0.5+11-1ubuntu1~24.10
openjdk-21-jre-zero 21.0.5+11-1ubuntu1~24.10

Ubuntu 24.04 LTS
openjdk-21-jdk 21.0.5+11-1ubuntu1~24.04
openjdk-21-jdk-headless 21.0.5+11-1ubuntu1~24.04
openjdk-21-jre 21.0.5+11-1ubuntu1~24.04
openjdk-21-jre-headless 21.0.5+11-1ubuntu1~24.04
openjdk-21-jre-zero 21.0.5+11-1ubuntu1~24.04

Ubuntu 22.04 LTS
openjdk-21-jdk 21.0.5+11-1ubuntu1~22.04
openjdk-21-jdk-headless 21.0.5+11-1ubuntu1~22.04
openjdk-21-jre 21.0.5+11-1ubuntu1~22.04
openjdk-21-jre-headless 21.0.5+11-1ubuntu1~22.04
openjdk-21-jre-zero 21.0.5+11-1ubuntu1~22.04

Ubuntu 20.04 LTS
openjdk-21-jdk 21.0.5+11-1ubuntu1~20.04
openjdk-21-jdk-headless 21.0.5+11-1ubuntu1~20.04
openjdk-21-jre 21.0.5+11-1ubuntu1~20.04
openjdk-21-jre-headless 21.0.5+11-1ubuntu1~20.04
openjdk-21-jre-zero 21.0.5+11-1ubuntu1~20.04

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart Java
applications to make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7099-1
CVE-2024-21208, CVE-2024-21210, CVE-2024-21217, CVE-2024-21235

Package Information:
https://launchpad.net/ubuntu/+source/openjdk-21/21.0.5+11-1ubuntu1~24.10
https://launchpad.net/ubuntu/+source/openjdk-21/21.0.5+11-1ubuntu1~24.04
https://launchpad.net/ubuntu/+source/openjdk-21/21.0.5+11-1ubuntu1~22.04
https://launchpad.net/ubuntu/+source/openjdk-21/21.0.5+11-1ubuntu1~20.04