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USN-5354-1: Twisted vulnerabilities

30 March 2022

Several security issues were fixed in Twisted.

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Releases

Packages

  • twisted - Event-based framework for internet applications

Details

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)

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 21.10
Ubuntu 20.04
Ubuntu 18.04

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

Related notices

  • USN-5354-2: python-twisted-web, python-twisted-lore, python-twisted-bin, python-twisted, python-twisted-names, python-twisted-runner, python-twisted-news, python3-twisted, python-twisted-core, twisted-doc, twisted, python-twisted-words, python-twisted-conch, python-twisted-mail