USN-6813-1: OpenJDK 21 vulnerabilities

Releases

• Ubuntu 23.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

• openjdk-21 - Open Source Java implementation

Details

It was discovered that the Hotspot component of OpenJDK 21 incorrectly
handled certain exceptions with specially crafted long messages. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2024-21011)

It was discovered that OpenJDK 21 incorrectly performed reverse DNS
query under certain circumstances in the Networking/HTTP client
component. An attacker could possibly use this issue to obtain sensitive
information. (CVE-2024-21012)

Vladimir Kondratyev discovered that the Hotspot component of OpenJDK 21
incorrectly handled address offset calculations in the C1 compiler. An
attacker could possibly use this issue to cause a denial of service
or execute arbitrary code. (CVE-2024-21068)

It was discovered that the Hotspot component of OpenJDK 21 incorrectly
handled array accesses in the C2 compiler. An attacker could possibly use
this issue to cause a denial of service or execute arbitrary code.
(CVE-2024-21094)

Update instructions

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

Ubuntu 23.10

• openjdk-21-jdk - 21.0.3+9-1ubuntu1~23.10.1
• openjdk-21-jdk-headless - 21.0.3+9-1ubuntu1~23.10.1
• openjdk-21-jre - 21.0.3+9-1ubuntu1~23.10.1
• openjdk-21-jre-headless - 21.0.3+9-1ubuntu1~23.10.1
• openjdk-21-jre-zero - 21.0.3+9-1ubuntu1~23.10.1

Ubuntu 22.04

• openjdk-21-jdk - 21.0.3+9-1ubuntu1~22.04.1
• openjdk-21-jdk-headless - 21.0.3+9-1ubuntu1~22.04.1
• openjdk-21-jre - 21.0.3+9-1ubuntu1~22.04.1
• openjdk-21-jre-headless - 21.0.3+9-1ubuntu1~22.04.1
• openjdk-21-jre-zero - 21.0.3+9-1ubuntu1~22.04.1

Ubuntu 20.04

• openjdk-21-jdk - 21.0.3+9-1ubuntu1~20.04.1
• openjdk-21-jdk-headless - 21.0.3+9-1ubuntu1~20.04.1
• openjdk-21-jre - 21.0.3+9-1ubuntu1~20.04.1
• openjdk-21-jre-headless - 21.0.3+9-1ubuntu1~20.04.1
• openjdk-21-jre-zero - 21.0.3+9-1ubuntu1~20.04.1

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

• CVE-2024-21012
• CVE-2024-21068
• CVE-2024-21094
• CVE-2024-21011

Related notices

• USN-6811-1
• USN-6812-1
• USN-6810-1
• USN-7096-1