========================================================================== Ubuntu Security Notice USN-3577-1 February 21, 2018 cups vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: CUPS could be made to provide access to printers over the network. Software Description: - cups: Common UNIX Printing System(tm) Details: Jann Horn discovered that CUPS permitted HTTP requests with the Host header set to "localhost.localdomain" from the loopback interface. If a user were tricked in to opening a specially crafted website in their web browser, an attacker could potentially exploit this to obtain sensitive information or control printers, via a DNS rebinding attack. (CVE-2017-18190) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: cups 2.1.3-4ubuntu0.4 Ubuntu 14.04 LTS: cups 1.7.2-0ubuntu1.9 In general, a standard system update will make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3577-1 CVE-2017-18190 Package Information: https://launchpad.net/ubuntu/+source/cups/2.1.3-4ubuntu0.4 https://launchpad.net/ubuntu/+source/cups/1.7.2-0ubuntu1.9