=========================================================================Ubuntu Security Notice USN-4970-1
June 01, 2021

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

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS

Summary:

GUPnP could allow unintended access to network services.

Software Description:
- gupnp: framework for creating UPnP devices and control points

Details:

It was discovered that GUPnP incorrectly filtered local requests. If a user
were tricked into visiting a malicious website, a remote attacker could
possibly use this issue to perform actions against local UPnP services such
as obtaining or altering sensitive information.

Update instructions:

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

Ubuntu 21.04:
  libgupnp-1.2-0                  1.2.4-1ubuntu0.21.04.1

Ubuntu 20.10:
  libgupnp-1.2-0                  1.2.4-1ubuntu0.20.10.1

Ubuntu 20.04 LTS:
  libgupnp-1.2-0                  1.2.3-0ubuntu0.20.04.2

After a standard system update you need to reboot your computer to make all
the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-4970-1
  CVE-2021-33516

Package Information:
  https://launchpad.net/ubuntu/+source/gupnp/1.2.4-1ubuntu0.21.04.1
  https://launchpad.net/ubuntu/+source/gupnp/1.2.4-1ubuntu0.20.10.1
  https://launchpad.net/ubuntu/+source/gupnp/1.2.3-0ubuntu0.20.04.2