CVE-2015-1852: Canonical Ubuntu Linux

Medium severity, CVSS 4.3. EPSS: 2.6% chance of exploitation in the next 30 days.

The s3_token middleware in OpenStack keystonemiddleware before 1.6.0 and python-keystoneclient before 1.4.0 disables certification verification when the "insecure" option is set in a paste configuration (paste.ini) file regardless of the value, which allows remote attackers to conduct man-in-the-middle attacks via a crafted certificate, a different vulnerability than CVE-2014-7144.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 15.04 only
• Openstack Keystonemiddleware: up to and including 1.5.0
• Openstack Python-Keystoneclient: up to and including 1.3.0

Published 2015-04-17. Last modified 2026-06-17.