USN-3577-1: CUPS vulnerability
21 February 2018
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
CUPS could be made to provide access to printers over the network.
- cups - Common UNIX Printing System™
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)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.