==========================================================================
Ubuntu Security Notice USN-6811-1
June 06, 2024

openjdk-lts vulnerabilities
==========================================================================

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

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in OpenJDK 11.

Software Description:
- openjdk-lts: Open Source Java implementation

Details:

It was discovered that the Hotspot component of OpenJDK 11 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 11 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 11
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)

Yakov Shafranovich discovered that OpenJDK 11 did not properly manage
memory in the Pack200 archive format. An attacker could possibly use this
issue to cause a denial of service. (CVE-2024-21085)

It was discovered that the Hotspot component of OpenJDK 11 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-11-jdk                  11.0.23+9-1ubuntu1~23.10.1
   openjdk-11-jdk-headless         11.0.23+9-1ubuntu1~23.10.1
   openjdk-11-jre                  11.0.23+9-1ubuntu1~23.10.1
   openjdk-11-jre-headless         11.0.23+9-1ubuntu1~23.10.1
   openjdk-11-jre-zero             11.0.23+9-1ubuntu1~23.10.1

Ubuntu 22.04 LTS
   openjdk-11-jdk                  11.0.23+9-1ubuntu1~22.04.1
   openjdk-11-jdk-headless         11.0.23+9-1ubuntu1~22.04.1
   openjdk-11-jre                  11.0.23+9-1ubuntu1~22.04.1
   openjdk-11-jre-headless         11.0.23+9-1ubuntu1~22.04.1
   openjdk-11-jre-zero             11.0.23+9-1ubuntu1~22.04.1

Ubuntu 20.04 LTS
   openjdk-11-jdk                  11.0.23+9-1ubuntu1~20.04.2
   openjdk-11-jdk-headless         11.0.23+9-1ubuntu1~20.04.2
   openjdk-11-jre                  11.0.23+9-1ubuntu1~20.04.2
   openjdk-11-jre-headless         11.0.23+9-1ubuntu1~20.04.2
   openjdk-11-jre-zero             11.0.23+9-1ubuntu1~20.04.2

Ubuntu 18.04 LTS
   openjdk-11-jdk                  11.0.23+9-1ubuntu1~18.04.1
                                   Available with Ubuntu Pro
   openjdk-11-jdk-headless         11.0.23+9-1ubuntu1~18.04.1
                                   Available with Ubuntu Pro
   openjdk-11-jre                  11.0.23+9-1ubuntu1~18.04.1
                                   Available with Ubuntu Pro
   openjdk-11-jre-headless         11.0.23+9-1ubuntu1~18.04.1
                                   Available with Ubuntu Pro
   openjdk-11-jre-zero             11.0.23+9-1ubuntu1~18.04.1
                                   Available with Ubuntu Pro

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-6811-1
   CVE-2024-21011, CVE-2024-21012, CVE-2024-21068, CVE-2024-21085,
   CVE-2024-21094

Package Information:
   https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.23+9-1ubuntu1~23.10.1
   https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.23+9-1ubuntu1~22.04.1
   https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.23+9-1ubuntu1~20.04.2