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Ubuntu 20.04 LTS: USN-6019-1 Critical Flask-CORS Information Leak

ubuntu
Calendar Grey April 13, 2023
Scroller Ubuntu
Flask-CORS security flaw disclosure on Ubuntu 20.04. Implement updates to bolster defenses against potential threats.
Applications using Flask-CORS could be made to expose sensitive information.

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.

Topics%20covered

Topics Covered

security advisory information leak critical ubuntu resource sharing python-flask flask-cors

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

Severity
critical
Lowest
Low
Medium
High
Critical

April 13, 2023

Topics%20covered

Topics Covered

security advisory information leak critical ubuntu resource sharing python-flask flask-cors

Package Information

https://launchpad.net/ubuntu/+source/python-flask-cors/3.0.8-2ubuntu0.1

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