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USN-4502-1: websocket-extensions vulnerability

16 September 2020

websocket-extensions could be made to exhaust the server's capacity to process incoming requests if it received specially crafted requests.

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Releases

Packages

Details

It was discovered that websocket-extensions does not properly parse
special headers. A remote attacker could use this issue to cause regex
backtracking, resulting in a denial of service. (CVE-2020-7663)

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 20.04
Ubuntu 18.04
Ubuntu 16.04

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

References