USN-459-1: pptpd vulnerability

14 May 2007

pptpd vulnerability

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

  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description


A flaw was discovered in the PPTP tunnel server. Remote attackers could send a specially crafted packet and disrupt established PPTP tunnels, leading to a denial of service.

Update instructions

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

Ubuntu 7.04
pptpd - 1.3.0-2ubuntu2.1
Ubuntu 6.10
pptpd - 1.3.0-1ubuntu1.1
Ubuntu 6.06 LTS
pptpd - 1.2.3-1ubuntu0.1

To update your system, please follow these instructions:

In general, a standard system upgrade is sufficient to effect the necessary changes.