The Python client library for Glance (python-glanceclient) before 0.10.0 does not properly check the preverify_ok value, which prevents the server hostname from being verified with a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate and allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
https://github.com/openstack/python-glanceclient/blob/master/doc/source/index.rst
https://bugs.launchpad.net/ossa/+bug/1192229
http://www.ubuntu.com/usn/USN-2004-1
http://secunia.com/advisories/54525
http://secunia.com/advisories/54313
http://rhn.redhat.com/errata/RHSA-2013-1200.html
http://lists.opensuse.org/opensuse-updates/2013-08/msg00019.html
Published: 2013-08-28
Updated: 2025-04-11
Base Score: 5.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: High
Base Score: 8.7
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.0025