1. Ubuntu Security Notices
  2. USN-5223-2

USN-5223-2: Apache Log4j 1.2 vulnerability

Publication date

8 February 2022

Overview

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

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.

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.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
16.04 xenial liblog4j1.2-java –  1.2.17-7ubuntu1+esm1  

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References

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