USN-6527-1: OpenJDK vulnerabilities

29 November 2023

Several security issues were fixed in OpenJDK 17, OpenJDK 21, OpenJDK.

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Details

Carter Kozak discovered that OpenJDK, when compiling with AVX-512
instruction support enabled, could produce code that resulted in memory
corruption in certain situations. An attacker targeting applications built
in this way could possibly use this to cause a denial of service or execute
arbitrary code. In Ubuntu, OpenJDK defaults to not using AVX-512
instructions. (CVE-2023-22025)

It was discovered that OpenJDK did not properly perform PKIX certification
path validation in certain situations. An attacker could use this to cause
a denial of service. (CVE-2023-22081)

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Update instructions

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

Ubuntu 23.10
Ubuntu 23.04
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04

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

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