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Ubuntu 16.04 LXD Access Issues: USN-2988-1 Moderate Security Advisory

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Calendar Grey May 31, 2016
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Multiple vulnerabilities addressed in LXD. Review Ubuntu patches to safeguard your systems immediately.
Several security issues were fixed in LXD.

Summary

Several security issues were fixed in LXD.

Software Description:

- 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)

Topics%20covered

Topics Covered

security advisory access control ubuntu permission issue lxd

Update Instructions

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

Ubuntu 16.04 LTS:
  lxd                             2.0.2-0ubuntu1~16.04.1

Ubuntu 15.10:
  lxd                             0.20-0ubuntu4.2

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

References

https://ubuntu.com/security/notices/USN-2988-1

CVE-2016-1581, CVE-2016-1582

May 31, 2016

Topics%20covered

Topics Covered

security advisory access control ubuntu permission issue lxd

Package Information

https://launchpad.net/ubuntu/+source/lxd/2.0.2-0ubuntu1~16.04.1
https://launchpad.net/ubuntu/+source/lxd/0.20-0ubuntu4.2

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