USN-4571-1: rack-cors vulnerability

5 October 2020

rack-cors would allow unintended access to files over the network.

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.

Releases

ruby-rack-cors - provides support for Cross-Origin Resource Sharing (CORS) for Rack compatible web applications

It was discovered that rack-cors did not properly handle relative file
paths. An attacker could use this vulnerability to access arbitrary files.

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.

The problem can be corrected by updating your system to the following package versions:

In general, a standard system update will make all the necessary changes.

Ubuntu Pro provides up to ten-year security coverage for over 23,000 open-source packages within the Ubuntu Main and Universe repositories.