USN-3247-1: AppArmor vulnerability

28 March 2017

AppArmor could remove the confinement from some programs.

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Releases

Packages

Details

Stéphane Graber discovered that AppArmor incorrectly unloaded some profiles
when restarted or upgraded, contrary to expected behavior.

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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.

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Update instructions

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

Ubuntu 16.10
Ubuntu 16.04
Ubuntu 14.04
Ubuntu 12.04

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

A new utility, called aa-remove-unknown, was added to assist with profiles that
would have been previously unloaded when AppArmor was restarted or upgraded.

References

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Further reading