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USN-4866-1: Netty vulnerabilities

29 June 2021

Several security issues were fixed in Netty.

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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.

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Releases

Packages

  • netty - Java NIO client/server socket framework

Details

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)

Reduce your security exposure

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 18.04

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

Related notices

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