[USN-6208-1] Gorilla WebSocket vulnerability

[Paulo Flabiano Smorigo]

==========================================================================
Ubuntu Security Notice USN-6208-1
July 06, 2023

golang-websocket vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

Gorilla WebSocket could be made to crash if it received specially crafted
network traffic.

Software Description:
- golang-websocket: Go package implementing the WebSocket protocol

Details:

It was discovered that Gorilla WebSocket incorrectly handled decoding WebSocket
frames. An attacker could possibly use this issue to cause a crash, resulting
in a denial of service.

Update instructions:

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
  golang-websocket-dev            1.2.0-1ubuntu2+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
  golang-websocket-dev            0.0~git20150811.0.b6ab76f-1ubuntu0.1~esm1

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

References:
  https://ubuntu.com/security/notices/USN-6208-1
  CVE-2020-27813
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