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USN-2988-1: LXD vulnerabilities

31 May 2016

Several security issues were fixed in LXD.

Releases

Packages

  • lxd - Container hypervisor based on LXC

Details

Robie Basak discovered that LXD incorrectly set permissions when setting up
a loop based ZFS pool. A local attacker could use this issue to copy and
read the data of any LXD container. (CVE-2016-1581)

Robie Basak discovered that LXD incorrectly set permissions when switching
an unprivileged container into privileged mode. A local attacker could use
this issue to access any world readable path in the container directory,
including setuid binaries. (CVE-2016-1582)

Update instructions

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

Ubuntu 16.04
Ubuntu 15.10

In general, a standard system update will make all the necessary changes.