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Ubuntu 21.04: USN-4956-1 Critical: Eventlet Denial Of Service

ubuntu
Calendar Grey May 17, 2021
Dist Ubuntu Esm H88
Ubuntu Security Advisory USN-4956-1 addresses a critical eventlet denial of service vulnerability impacting various Ubuntu versions. Please ensure you update immediately.
Eventlet could be made denial of service if it received a specially crafted request.

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.

Topics%20covered

Topics Covered

security advisory denial of service security update Ubuntu update instructions ubuntu python-eventlet eventlet

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

Severity
critical
Lowest
Low
Medium
High
Critical

May 17, 2021

Topics%20covered

Topics Covered

security advisory denial of service security update Ubuntu update instructions ubuntu python-eventlet eventlet

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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