--- title: 'USN-4811-1: libzip 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-4811-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-4811-1 --- # USN-4811-1: libzip vulnerability Publication date 15 March 2021 Overview libzip could be made to crash or run programs if it received specially crafted ZIP archives. Releases [18.04 LTS](https://ubuntu.com/security/notices?release=bionic) [16.04 LTS](https://ubuntu.com/security/notices?release=xenial) --- Open side navigation ## Packages * [libzip](https://ubuntu.com/security/cves?package=libzip) - library for reading, creating, and modifying zip archives ## Details It was discovered that libzip mishandled certain malformed ZIP archives. A remote attacker could use this vulnerability to cause a denial of service. ## 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 | | --- | --- | | 18.04 LTS bionic | [ziptool](https://launchpad.net/ubuntu/+source/libzip) –  1.1.2-1.1ubuntu0.1~esm1   Ubuntu Pro | | | | [libzip4](https://launchpad.net/ubuntu/+source/libzip) –  1.1.2-1.1ubuntu0.1~esm1   Ubuntu Pro | | | | 16.04 LTS xenial | [libzip4](https://launchpad.net/ubuntu/+source/libzip) –  1.0.1-0ubuntu1.1~esm1   Ubuntu Pro | | | | [zipcmp](https://launchpad.net/ubuntu/+source/libzip) –  1.0.1-0ubuntu1.1~esm1   Ubuntu Pro | | | --- ### 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-2017-14107](https://ubuntu.com/security/CVE-2017-14107)