It was discovered that click did not properly perform input sanitizationduring click package installation. If a user were tricked into installing acrafted click package, a remote attacker could exploit this to escalateprivileges by tricking click into installing lenient security policy forthe installed application.
The problem can be corrected by updating your system to the following
To update your system, please follow these instructions:
In general, a standard system update will make all the necessary changes. Acorresponding update will be provided to Ubuntu Phone users soon.
For more information, please see:https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue/