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Ubuntu 24.04 LTS: USN-6932-1 Critical: OpenJDK 21 Memory Issues

ubuntu
Calendar Grey July 31, 2024
Dist Ubuntu Esm H88
Essential OpenJDK 21 security notice for Ubuntu: Important fixes and threat details clarified. Maintain your safety!
Several security issues were fixed in OpenJDK 21.

Summary

Several security issues were fixed in OpenJDK 21.

Software Description:

- openjdk-21: Open Source Java implementation

Details:

It was discovered that the Hotspot component of OpenJDK 21 was not properly

performing bounds when handling certain UTF-8 strings, which could lead to

a buffer overflow. An attacker could possibly use this issue to cause a

denial of service or execute arbitrary code. (CVE-2024-21131)

It was discovered that the Hotspot component of OpenJDK 21 could be made to

run into an infinite loop. If an automated system were tricked into

processing excessively large symbols, an attacker could possibly use this

issue to cause a denial of service. (CVE-2024-21138)

It was discovered that the Hotspot component of OpenJDK 21 did not

properly perform range check elimination. An attacker could possibly use

this issue to cause a denial of service, execute arbitrary code or bypass

Java sandbox restrictions. (CVE-2024-21140)

Sergey Bylokhov discovered...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Ubuntu memory management infinite loop OpenJDK

Update Instructions

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

Ubuntu 24.04 LTS
   openjdk-21-jdk                  21.0.4+7-1ubuntu2~24.04
   openjdk-21-jdk-headless         21.0.4+7-1ubuntu2~24.04
   openjdk-21-jre                  21.0.4+7-1ubuntu2~24.04
   openjdk-21-jre-headless         21.0.4+7-1ubuntu2~24.04
   openjdk-21-jre-zero             21.0.4+7-1ubuntu2~24.04

Ubuntu 22.04 LTS
   openjdk-21-jdk                  21.0.4+7-1ubuntu2~22.04
   openjdk-21-jdk-headless         21.0.4+7-1ubuntu2~22.04
   openjdk-21-jre                  21.0.4+7-1ubuntu2~22.04
   openjdk-21-jre-headless         21.0.4+7-1ubuntu2~22.04
   openjdk-21-jre-zero             21.0.4+7-1ubuntu2~22.04

Ubuntu 20.04 LTS
   openjdk-21-jdk                  21.0.4+7-1ubuntu2~20.04
   openjdk-21-jdk-headless         21.0.4+7-1ubuntu2~20.04
   openjdk-21-jre                  21.0.4+7-1ubuntu2~20.04
   openjdk-21-jre-headless         21.0.4+7-1ubuntu2~20.04
   openjdk-21-jre-zero             21.0.4+7-1ubuntu2~20.04

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-6932-1

CVE-2024-21131, CVE-2024-21138, CVE-2024-21140, CVE-2024-21145,

CVE-2024-21147

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6932-1

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Ubuntu memory management infinite loop OpenJDK

Package Information

https://launchpad.net/ubuntu/+source/openjdk-21/21.0.4+7-1ubuntu2~24.04
https://launchpad.net/ubuntu/+source/openjdk-21/21.0.4+7-1ubuntu2~22.04
https://launchpad.net/ubuntu/+source/openjdk-21/21.0.4+7-1ubuntu2~20.04

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