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USN-5192-2: Apache Log4j 2 vulnerability

17 December 2021

Apache Log4j 2 could be made to crash or run programs as an administrator if it received a specially crafted input.

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Releases

Packages

Details

USN-5192-1 fixed a vulnerability in Apache Log4j 2. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

Chen Zhaojun discovered that Apache Log4j 2 allows remote attackers to run
programs via a special crafted input. An attacker could use this vulnerability
to cause a denial of service or possibly execute arbitrary code.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04

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

References

Related notices

  • USN-5192-1: apache-log4j2, liblog4j2-java, liblog4j2-java-doc
  • USN-5197-1: apache-log4j2, liblog4j2-java, liblog4j2-java-doc