--- title: 'USN-5331-2: tcpdump vulnerabilities | 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-5331-2 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-5331-2 --- # USN-5331-2: tcpdump vulnerabilities Publication date 11 April 2022 Overview Several security issues were fixed in tcpdump. Releases [20.04 LTS](https://ubuntu.com/security/notices?release=focal) [18.04 LTS](https://ubuntu.com/security/notices?release=bionic) --- Open side navigation ## Packages * [tcpdump](https://ubuntu.com/security/cves?package=tcpdump) - command-line network traffic analyzer ## Details USN-5331-1 fixed several vulnerabilities in tcpdump. This update provides the corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Original advisory details: It was discovered that tcpdump incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service, or possibly execute arbitrary code. ([CVE-2018-16301](https://ubuntu.com/security/CVE-2018-16301)) It was discovered that tcpdump incorrectly handled certain captured data. An attacker could possibly use this issue to cause a denial of service. ([CVE-2020-8037](https://ubuntu.com/security/CVE-2020-8037)) ## 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 | | --- | --- | | 20.04 LTS focal | [tcpdump](https://launchpad.net/ubuntu/+source/tcpdump) –  [4.9.3-4ubuntu0.1](https://launchpad.net/ubuntu/+source/tcpdump/4.9.3-4ubuntu0.1) | | | | 18.04 LTS bionic | [tcpdump](https://launchpad.net/ubuntu/+source/tcpdump) –  [4.9.3-0ubuntu0.18.04.2](https://launchpad.net/ubuntu/+source/tcpdump/4.9.3-0ubuntu0.18.04.2) | | | --- ### 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-2020-8037](https://ubuntu.com/security/CVE-2020-8037) * [CVE-2018-16301](https://ubuntu.com/security/CVE-2018-16301) ## Related notices * [USN-5331-1](https://ubuntu.com/security/notices/USN-5331-1)