[USN-2956-1] ubuntu-core-launcher vulnerability

Jamie Strandboge jamie at canonical.com
Fri Apr 29 17:35:22 UTC 2016

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


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

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


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:

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


Package Information:
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