Ubuntu Security Notice USN-2771-1
15th 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 version:
- 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/