USN-4866-1: Netty vulnerabilities

29 June 2021

Several security issues were fixed in Netty.

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Releases

It was discovered that Netty incorrectly implements HTTP/2. An attacker
could possibly use this issue to cause a denial of service. (CVE-2019-9512,
CVE-2019-9514, CVE-2019-9515, CVE-2019-9518)

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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

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

USN-4308-1: python-twisted, python-twisted-words, python-twisted-web, python3-twisted-bin, python-twisted-bin, python-twisted-core, python3-twisted, twisted-doc, python-twisted-names, python-twisted-news, twisted, python-twisted-runner, python-twisted-conch, python-twisted-mail

Ubuntu Pro provides up to ten-year security coverage for over 23,000 open-source packages within the Ubuntu Main and Universe repositories.