==========================================================================
Ubuntu Security Notice USN-2956-1
April 29, 2016

ubuntu-core-launcher vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 16.04 LTS

Summary:

ubuntu-core-launcher did not properly isolate snaps from one another.

Software Description:
– ubuntu-core-launcher: Snap application launcher

Details:

Zygmunt Krynicki discovered that ubuntu-core-launcher did not properly
sanitize its input and contained a logic error when determining the
mountpoint of bind mounts when using snaps on Ubuntu classic systems (eg,
traditional desktop and server). If a user were tricked into installing a
malicious snap with a crafted snap name, an attacker could perform a
delayed attack to steal data or execute code within the security context of
another snap. This issue did not affect Ubuntu Core systems.

Update instructions:

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

Ubuntu 16.04 LTS:
  ubuntu-core-launcher            1.0.27.1

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

References:
  http://www.ubuntu.com/usn/usn-2956-1
  CVE-2016-1580

Package Information:
  https://launchpad.net/ubuntu/+source/ubuntu-core-launcher/1.0.27.1
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v2
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=BAmA
—–END PGP SIGNATURE—–
—