Vulnerability CVE-2018-6556


Published: 2018-08-10

Description:
lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn't otherwise be able to reach. It may also be used to trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys). Affected releases are LXC: 2.0 versions above and including 2.0.9; 3.0 versions above and including 3.0.0, prior to 3.0.2.

 References:
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591
https://bugzilla.suse.com/show_bug.cgi?id=988348
https://usn.ubuntu.com/usn/usn-3730-1

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