USN-687-1: nfs-utils vulnerability

4 December 2008

nfs-utils vulnerability

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

  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 7.10
  • Ubuntu 6.06 LTS

Software Description

  • nfs-utils


It was discovered that nfs-utils did not properly enforce netgroup restrictions when using TCP Wrappers. Remote attackers could bypass the netgroup restrictions enabled by the administrator and possibly gain access to sensitive information.

Update instructions

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

Ubuntu 8.10
nfs-kernel-server - 1:1.1.2-4ubuntu1.1
Ubuntu 8.04 LTS
nfs-kernel-server - 1:1.1.2-2ubuntu2.2
Ubuntu 7.10
nfs-kernel-server - 1:1.1.1~git-20070709-3ubuntu1.1
Ubuntu 6.06 LTS
nfs-kernel-server - 1:1.0.7-3ubuntu2.1

To update your system, please follow these instructions:

After a standard system upgrade you need to restart nfs services to effect the necessary changes.