1. Ubuntu Security Notices
  2. USN-5354-2

USN-5354-2: Twisted vulnerability

Publication date

5 May 2022

Overview

Twisted could be made to crash if it received specially crafted network traffic.

Releases

Packages

  • twisted - Event-based framework for internet applications

Details

USN-5354-1 fixed vulnerabilities in Twisted. This update provides the
corresponding updates for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and
Ubuntu 22.04 LTS.

Original advisory details:

It was discovered that Twisted incorrectly processed SSH handshake data on
connection establishments. A remote attacker could use this issue to cause
Twisted to crash, resulting in a denial of service. (CVE-2022-21716)

USN-5354-1 fixed vulnerabilities in Twisted. This update provides the
corresponding updates for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and
Ubuntu 22.04 LTS.

Original advisory details:

It was discovered that Twisted incorrectly processed SSH handshake data on
connection establishments. A remote attacker could use this issue to cause
Twisted to crash, resulting in a denial of service. (CVE-2022-21716)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
22.04 jammy python3-twisted –  22.1.0-2ubuntu2.1
16.04 xenial python3-twisted –  16.0.0-1ubuntu0.4+esm1  
python-twisted-web –  16.0.0-1ubuntu0.4+esm1  
python-twisted –  16.0.0-1ubuntu0.4+esm1  
python-twisted-bin –  16.0.0-1ubuntu0.4+esm1  
14.04 trusty python-twisted-web –  13.2.0-1ubuntu1.2+esm2  
python-twisted –  13.2.0-1ubuntu1.2+esm2  
python-twisted-bin –  13.2.0-1ubuntu1.2+esm2  

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References

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