Ubuntu alert USN-2579-1 (autofs)

From:
    	     
 
Marc Deslauriers <marc.deslauriers@canonical.com> 
To:
    	     
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
    	     
 
[USN-2579-1] autofs vulnerability 
Date:
    	     
 
Mon, 27 Apr 2015 08:59:49 -0400
Message-ID:
    	     
 
<553E32C5.5050703@canonical.com>
==========================================================================
Ubuntu Security Notice USN-2579-1
April 27, 2015

autofs vulnerability
==========================================================================

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

- Ubuntu 14.10

Summary:

autofs could be made to run programs as an administrator if program maps
were configured.

Software Description:
- autofs: kernel-based automounter for Linux

Details:

It was discovered that autofs incorrectly filtered environment variables
when using program maps. When program maps were configured, a local user
could use this issue to escalate privileges.

This update changes the default behaviour by adding a prefix to environment
variables. Sites using program maps will need to adapt to the new variable
names, or revert to the previous names by using a new configuration option
called FORCE_STANDARD_PROGRAM_MAP_ENV.

Update instructions:

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

Ubuntu 14.10:
  autofs                          5.0.8-1ubuntu1.1

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

References:
  http://www.ubuntu.com/usn/usn-2579-1
  CVE-2014-8169

Package Information:
  https://launchpad.net/ubuntu/+source/autofs/5.0.8-1ubuntu1.1


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