=========================================================================Ubuntu Security Notice USN-5784-1
January 03, 2023

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

usbredir could be made to crash or run programs if it received
specially crafted input.

Software Description:
- usbredir: usbredir libraries and utilities

Details:

It was discovered that usbredir incorrectly handled memory when
serializing large amounts of data in the case of a slow or blocked
destination. An attacker could possibly use this issue to cause
applications using usbredir to crash, resulting in a denial of
service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 20.04 LTS:
   libusbredirhost1                0.8.0-1ubuntu0.1
   libusbredirparser1              0.8.0-1ubuntu0.1
   usbredirserver                  0.8.0-1ubuntu0.1

Ubuntu 18.04 LTS:
   libusbredirhost1                0.7.1-1ubuntu0.18.04.1
   libusbredirparser1              0.7.1-1ubuntu0.18.04.1
   usbredirserver                  0.7.1-1ubuntu0.18.04.1

Ubuntu 16.04 ESM:
   libusbredirhost1                0.7.1-1ubuntu0.16.04.1~esm1
   libusbredirparser1              0.7.1-1ubuntu0.16.04.1~esm1
   usbredirserver                  0.7.1-1ubuntu0.16.04.1~esm1

Ubuntu 14.04 ESM:
   libusbredirhost1                0.6-2ubuntu1.1+esm1
   libusbredirparser1              0.6-2ubuntu1.1+esm1
   usbredirserver                  0.6-2ubuntu1.1+esm1

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

References:
   https://ubuntu.com/security/notices/USN-5784-1
   CVE-2021-3700

Package Information:
   https://launchpad.net/ubuntu/+source/usbredir/0.8.0-1ubuntu0.1
https://launchpad.net/ubuntu/+source/usbredir/0.7.1-1ubuntu0.18.04.1