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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.

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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.

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

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Further reading