Ubuntu 21.10 / 21.04 / 20.04 LTS: 5197-1 Moderate: Apache Log4j 2 DoS

ubuntu

December 15, 2021

Apache Log4j 2 could be made to crash if it received specially crafted input.

Summary

Apache Log4j 2 could be made to crash if it received specially crafted input.

Software Description:

- apache-log4j2: Apache Log4j - Logging Framework for Java

Details:

It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was

incomplete in certain non-default configurations. An attacker could use this

vulnerability to cause a denial of service.

Topics Covered

security advisory denial of service advisory ubuntu apache log4j

Update Instructions

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

Ubuntu 21.10:
  liblog4j2-java                  2.16.0-0.21.10.1

Ubuntu 21.04:
  liblog4j2-java                  2.16.0-0.21.04.1

Ubuntu 20.04 LTS:
  liblog4j2-java                  2.16.0-0.20.04.1

In general, a standard system update will make all the necessary changes.