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USN-5223-2: Apache Log4j 1.2 vulnerability

8 February 2022

Apache Log4j 1.2 could be made to crash or run programs if it received specially crafted input.

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Releases

Packages

Details

USN-5223-1 fixed a vulnerability in Apache Log4j 1.2. This update
provides the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that Apache Log4j 1.2 was vulnerable to deserialization of
untrusted data if the configuration file was editable. An attacker could use
this vulnerability to cause a DoS 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-5223-1: liblog4j1.2-java-doc, liblog4j1.2-java, apache-log4j1.2