CVE-2017-7549: Openstack Instack-Undercloud

Medium severity, CVSS 6.4. EPSS: 0.4% chance of exploitation in the next 30 days.

A flaw was found in instack-undercloud 7.2.0 as packaged in Red Hat OpenStack Platform Pike, 6.1.0 as packaged in Red Hat OpenStack Platform Oacta, 5.3.0 as packaged in Red Hat OpenStack Newton, 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.

Affected products

• Openstack Instack-Undercloud: version 7.2.0 only; version 6.1.0 only; version 5.3.0 only

Published 2017-09-21. Last modified 2026-06-17.