Debian DSA-3317-1 Critical: LXC Directory Traversal and Security Flaws

CVE-2015-1331

Roman Fiedler discovered a directory traversal flaw in LXC when
creating lock files. A local attacker could exploit this flaw to
create an arbitrary file as the root user.

CVE-2015-1334

Roman Fiedler discovered that LXC incorrectly trusted the
container's proc filesystem to set up AppArmor profile changes and
SELinux domain transitions. A malicious container could create a
fake proc filesystem and use this flaw to run programs inside the
container that are not confined by AppArmor or SELinux.

For the stable distribution (jessie), these problems have been fixed in
version 1:1.0.6-6+deb8u1.

For the testing distribution (stretch), these problems have been fixed
in version 1:1.0.7-4.

For the unstable distribution (sid), these problems have been fixed in
version 1:1.0.7-4.

We recommend that you upgrade your lxc packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at...