--- title: 'USN-3603-1: Paramiko 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-3603-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-3603-1 --- # USN-3603-1: Paramiko vulnerability Publication date 20 March 2018 Overview Paramiko could be made to run programs if it received specially crafted network traffic. Releases [17.10](https://ubuntu.com/security/notices?release=artful) [16.04 LTS](https://ubuntu.com/security/notices?release=xenial) [14.04 LTS](https://ubuntu.com/security/notices?release=trusty) --- Open side navigation ## Packages * [paramiko](https://ubuntu.com/security/cves?package=paramiko) - Python SSH2 library ## Details Matthijs Kooijman discovered that Paramiko's SSH server implementation did not properly require authentication before processing requests. An unauthenticated remote attacker could possibly use this to execute arbitrary code. ## Update instructions After a standard system update you need to restart any applications using Paramiko's server implementation to 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 | | --- | --- | | 17.10 artful | [python-paramiko](https://launchpad.net/ubuntu/+source/paramiko) –  [2.0.0-1ubuntu0.1](https://launchpad.net/ubuntu/+source/paramiko/2.0.0-1ubuntu0.1) | | | | [python3-paramiko](https://launchpad.net/ubuntu/+source/paramiko) –  [2.0.0-1ubuntu0.1](https://launchpad.net/ubuntu/+source/paramiko/2.0.0-1ubuntu0.1) | | | | 16.04 LTS xenial | [python-paramiko](https://launchpad.net/ubuntu/+source/paramiko) –  [1.16.0-1ubuntu0.1](https://launchpad.net/ubuntu/+source/paramiko/1.16.0-1ubuntu0.1) | | | | [python3-paramiko](https://launchpad.net/ubuntu/+source/paramiko) –  [1.16.0-1ubuntu0.1](https://launchpad.net/ubuntu/+source/paramiko/1.16.0-1ubuntu0.1) | | | | 14.04 LTS trusty | [python-paramiko](https://launchpad.net/ubuntu/+source/paramiko) –  [1.10.1-1git1ubuntu0.1](https://launchpad.net/ubuntu/+source/paramiko/1.10.1-1git1ubuntu0.1) | | | --- ### 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-2018-7750](https://ubuntu.com/security/CVE-2018-7750) ## Related notices * [USN-3603-2](https://ubuntu.com/security/notices/USN-3603-2)