USN-7099-1: OpenJDK 21 vulnerabilities

USN-7099-1: OpenJDK 21 vulnerabilities
10 November 2024

• Several security issues were fixed in OpenJDK 21.

Releases
Ubuntu 24.10 Ubuntu 24.04 LTS Ubuntu 22.04 LTS Ubuntu 20.04 LTS

Packages
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

• 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