CVE-2017-7481

Ansible before versions 2.3.1.0 and 2.4.0.0 fails to properly mark
lookup-plugin results as unsafe. If an attacker could control the results
of lookup() calls, they could inject Unicode strings to be parsed by the
jinja2 templating system, resulting in code execution. By default, the
jinja2 templating language is now marked as ‘unsafe’ and is not evaluated.

Bugs

• <https://bugzilla.redhat.com/show_bug.cgi?id=1450018&gt;