USN-4699-1: Apache Log4net vulnerability

19 January 2021

Apache Log4net could made to expose sensitive information if it received a specially crafted configuration file.

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Releases

Packages

  • log4net - Highly configurable logging API for the CLI log4net

Details

It was discovered that Apache Log4net incorrectly handled certain configuration files.
An attacker could possibly use this issue to expose sensitive information.

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 20.10
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

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

References

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Further reading