==========================================================================
Ubuntu Security Notice USN-4288-1
February 20, 2020

ppp vulnerability
==========================================================================

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

- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

ppp could be made to crash or run programs if it received specially crafted
network traffic.

Software Description:
- ppp: Point-to-Point Protocol (PPP)

Details:

It was discovered that ppp incorrectly handled certain rhostname values. A
remote attacker could use this issue to cause ppp 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 19.10:
  ppp                             2.4.7-2+4.1ubuntu4.1

Ubuntu 18.04 LTS:
  ppp                             2.4.7-2+2ubuntu1.2

Ubuntu 16.04 LTS:
  ppp                             2.4.7-1+2ubuntu1.16.04.2

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

References:
  https://usn.ubuntu.com/4288-1
  CVE-2020-8597

Package Information:
  https://launchpad.net/ubuntu/+source/ppp/2.4.7-2+4.1ubuntu4.1
  https://launchpad.net/ubuntu/+source/ppp/2.4.7-2+2ubuntu1.2
  https://launchpad.net/ubuntu/+source/ppp/2.4.7-1+2ubuntu1.16.04.2