--- title: 'USN-4731-1: JUnit 4 vulnerability | Ubuntu security notices' description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/notices/USN-4731-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-4731-1 --- # USN-4731-1: JUnit 4 vulnerability Publication date 10 February 2021 Overview The system could be made to expose sensitive information. Releases [20.10](https://ubuntu.com/security/notices?release=groovy) [20.04 LTS](https://ubuntu.com/security/notices?release=focal) [18.04 LTS](https://ubuntu.com/security/notices?release=bionic) [16.04 LTS](https://ubuntu.com/security/notices?release=xenial) --- Open side navigation ## Packages * [junit4](https://ubuntu.com/security/cves?package=junit4) - Simple framework to write repeatable tests ## Details It was discovered that JUnit 4 contains a local information disclosure vulnerability. An attacker could possibly use this issue to obtain sensitive information. ## Update instructions In general, a standard system update will make all the necessary changes. [Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security) The problem can be corrected by updating your system to the following package versions: | Ubuntu Release | Package Version | | --- | --- | | 20.10 groovy | [junit4](https://launchpad.net/ubuntu/+source/junit4) –  [4.12-8ubuntu0.20.10.1](https://launchpad.net/ubuntu/+source/junit4/4.12-8ubuntu0.20.10.1) | | | | [junit4-doc](https://launchpad.net/ubuntu/+source/junit4) –  [4.12-8ubuntu0.20.10.1](https://launchpad.net/ubuntu/+source/junit4/4.12-8ubuntu0.20.10.1) | | | | 20.04 LTS focal | [junit4](https://launchpad.net/ubuntu/+source/junit4) –  [4.12-8ubuntu0.20.04.1](https://launchpad.net/ubuntu/+source/junit4/4.12-8ubuntu0.20.04.1) | | | | [junit4-doc](https://launchpad.net/ubuntu/+source/junit4) –  [4.12-8ubuntu0.20.04.1](https://launchpad.net/ubuntu/+source/junit4/4.12-8ubuntu0.20.04.1) | | | | 18.04 LTS bionic | [junit4](https://launchpad.net/ubuntu/+source/junit4) –  [4.12-8~18.04.1](https://launchpad.net/ubuntu/+source/junit4/4.12-8~18.04.1) | | | | [junit4-doc](https://launchpad.net/ubuntu/+source/junit4) –  [4.12-8~18.04.1](https://launchpad.net/ubuntu/+source/junit4/4.12-8~18.04.1) | | | | 16.04 LTS xenial | [junit4](https://launchpad.net/ubuntu/+source/junit4) –  [4.12-4ubuntu1.1](https://launchpad.net/ubuntu/+source/junit4/4.12-4ubuntu1.1) | | | | [junit4-doc](https://launchpad.net/ubuntu/+source/junit4) –  [4.12-4ubuntu1.1](https://launchpad.net/ubuntu/+source/junit4/4.12-4ubuntu1.1) | | | --- ### 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. [Get Ubuntu Pro](https://ubuntu.com/pro) ## References * [CVE-2020-15250](https://ubuntu.com/security/CVE-2020-15250)