CVE-2014-3517: Openstack Nova

Medium severity, CVSS 4.3. EPSS: 2% chance of exploitation in the next 30 days.

api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.

Affected products

• Openstack Nova: from 2013.2, up to and including 2013.2.4; from 2014.1, before 2014.1.2 (fixed in 2014.1.2); version 2014.2.0 only

Published 2014-08-07. Last modified 2026-06-17.