==========================================================================
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
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