Ubuntu Security Notice USN-6019-1 – Torchsec
Ubuntu Security Notice USN-6019-1
April 13, 2023
python-flask-cors vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
Summary:
Applications using Flask-CORS could be made to expose sensitive
information.
Software Description:
- python-flask-cors: Flask extension for handling Cross Origin Resource Sharing (CORS)
Details:
It was discovered that Flask-CORS did not properly escape paths before
evaluating resource rules. An attacker could possibly use this to
expose sensitive information.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
python3-flask-cors 3.0.8-2ubuntu0.1
After a standard system update you need to restart application using
Flask-CORS to make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6019-1
CVE-2020-25032
Package Information:
https://launchpad.net/ubuntu/+source/python-flask-cors/3.0.8-2ubuntu0.1
Gloss