USN-6019-1: Flask-CORS vulnerability

Releases

• Ubuntu 20.04 LTS

Packages

• 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

• 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

• CVE-2020-25032