Your submission was sent successfully! Close

USN-5192-1: Apache Log4j 2 vulnerability

14 December 2021

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

Releases

Packages

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.
Please see the following link for more information:
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/Log4Shell

Update instructions

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

Ubuntu 21.10
Ubuntu 21.04
Ubuntu 20.04
Ubuntu 18.04

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

References

Related notices

  • USN-5192-2: liblog4j2-java, liblog4j2-java-doc, apache-log4j2
  • USN-5197-1: liblog4j2-java, liblog4j2-java-doc, apache-log4j2