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

USN-5223-1: Apache Log4j 1.2 vulnerability

Publication date

12 January 2022

Overview

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

Releases

Packages

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.

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
21.10 impish liblog4j1.2-java –  1.2.17-10ubuntu0.21.10.1
21.04 hirsute liblog4j1.2-java –  1.2.17-10ubuntu0.21.04.1
20.04 focal liblog4j1.2-java –  1.2.17-9ubuntu0.1
18.04 bionic liblog4j1.2-java –  1.2.17-8+deb10u1ubuntu0.1

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References

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