USN-2579-1: autofs vulnerability

Ubuntu Security Notice USN-2579-1

27th April, 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 version:

Ubuntu 14.10:

autofs 5.0.8-1ubuntu1.1

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

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

References

CVE-2014-8169

from Ubuntu Security Notices http://ift.tt/1Fr7Ybg