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USN-2579-1: autofs vulnerability

27 April 2015

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

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Releases

Packages

  • 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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 14.10

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

References