[USN-5354-1] Twisted vulnerabilities

========================================================================== Ubuntu Security Notice USN-5354-1 March 30, 2022
twisted vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS
Several security issues were fixed in Twisted.
Software Description: – twisted: Event-based framework for internet applications
It was discovered that Twisted incorrectly filtered HTTP headers when clients are being redirected to another origin. A remote attacker could use this issue to obtain sensitive information. (CVE-2022-21712)
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:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: python3-twisted 20.3.0-7ubuntu1.1 python3-twisted-bin 20.3.0-7ubuntu1.1
Ubuntu 20.04 LTS: python3-twisted 18.9.0-11ubuntu0.20.04.2 python3-twisted-bin 18.9.0-11ubuntu0.20.04.2
Ubuntu 18.04 LTS: python-twisted 17.9.0-2ubuntu0.3 python-twisted-bin 17.9.0-2ubuntu0.3 python3-twisted 17.9.0-2ubuntu0.3 python3-twisted-bin 17.9.0-2ubuntu0.3
In general, a standard system update will make all the necessary changes.
References: ubuntu.com/security/notices/USN-5354-1 CVE-2022-21712, CVE-2022-21716
Package Information: launchpad.net/ubuntu/+source/twisted/20.3.0-7ubuntu1.1 launchpad.net/ubuntu/+source/twisted/18.9.0-11ubuntu0.20.04.2 launchpad.net/ubuntu/+source/twisted/17.9.0-2ubuntu0.3