[USN-4571-1] rack-cors vulnerability
mike.salvatore at canonical.com
Mon Oct 5 18:29:58 UTC 2020
Ubuntu Security Notice USN-4571-1
October 05, 2020
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
rack-cors would allow unintended access to files over the network.
- 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.
The problem can be corrected by updating your system to the following
Ubuntu 16.04 LTS:
In general, a standard system update will make all the necessary changes.
More information about the ubuntu-security-announce