Red Hat Security Advisory 2017-2557-01 - instack-undercloud provides a collection of scripts and elements that can be used to install an OpenStack undercloud. Security Fix: A flaw was found in instack-undercloud where pre-install and security policy scripts used insecure temporary files. A local user could exploit this flaw to conduct a symbolic-link attack, allowing them to overwrite the contents of arbitrary files. This issue was discovered by Matthew Booth .
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