USN-2595-1: ppp vulnerability

5 May 2015

ppp vulnerability

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

  • Ubuntu 14.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


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

Software Description

  • ppp - Point-to-Point Protocol (PPP)


It was discovered that ppp incorrectly handled large PIDs. When pppd is used with a RADIUS server, a remote attacker could use this issue to cause it to crash, resulting in a denial of service.

Update instructions

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

Ubuntu 14.10
ppp - 2.4.5-5.1ubuntu3.2
Ubuntu 14.04 LTS
ppp - 2.4.5-5.1ubuntu2.2
Ubuntu 12.04 LTS
ppp - 2.4.5-5ubuntu1.2

To update your system, please follow these instructions:

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