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==========================================================================
Ubuntu Security Notice USN-4956-1
May 17, 2021

python-eventlet vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS

Summary:

Eventlet could be made denial of service if it received a specially
crafted request.

Software Description:
- python-eventlet: concurrent networking library

Details:

It was discovered that Eventlet incorrectly handled certain requests.
An attacker could possibly use this issue to cause a denial of service.

Update instructions:

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

Ubuntu 21.04:
  python3-eventlet                0.30.0-0ubuntu1.1

Ubuntu 20.10:
  python3-eventlet                0.26.1-0ubuntu1.1

Ubuntu 20.04 LTS:
  python3-eventlet                0.25.1-2ubuntu1.1

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

References:
  https://ubuntu.com/security/notices/USN-4956-1
  CVE-2021-21419

Package Information:
  https://launchpad.net/ubuntu/+source/python-eventlet/0.30.0-0ubuntu1.1
  https://launchpad.net/ubuntu/+source/python-eventlet/0.26.1-0ubuntu1.1
  https://launchpad.net/ubuntu/+source/python-eventlet/0.25.1-2ubuntu1.1

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