USN-2771-1: Click vulnerability

15 October 2015

click vulnerability

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

  • Ubuntu 15.04
  • Ubuntu 14.04 LTS

Summary

Click could be made to allow malicious apps unintended access to the system.

Software Description

  • click - Click package manager

Details

It was discovered that click did not properly perform input sanitization during click package installation. If a user were tricked into installing a crafted click package, a remote attacker could exploit this to escalate privileges by tricking click into installing lenient security policy for the installed application.

Update instructions

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

Ubuntu 15.04
python3-click - 0.4.38.5ubuntu0.2
Ubuntu 14.04 LTS
python3-click - 0.4.21.1ubuntu0.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References