- OpenShift Enterprise 2
- Disabling SSLv3 and SSLv2 for OpenShift Enterprise
- Resolving POODLE: SSLv3 vulnerability (CVE-2014-3566) for OpenShift Enterprise
Disable SSLv3 by modifying the SSLProtocol directive anywhere it is present in the httpd server configuration. It can be disabled simply by adding
-SSLv3 to the SSLProtocol directive, e.g.:
SSLProtocol All -SSLv2 -SSLv3
For OpenShift Enterprise 2.1, the relevant configuration file locations are:
On broker hosts,
/etc/httpd/conf.d/000002_openshift_origin_broker_proxy.conf(provided by the openshift-origin-broker RPM)
On node hosts,
/etc/httpd/conf.d/000001_openshift_origin_node.conf(provided by the rubygem-openshift-origin-frontend-apache-mod-rewrite RPM) or
/etc/httpd/conf.d/000001_openshift_origin_frontend_vhost.conf(provided by the rubygem-openshift-origin-frontend-apache-vhost RPM).
For earlier versions of OpenShift Enterprise, as well as current versions with a customized frontend vhost template, the SSLProtocol directive may be specified in the vhost template (
/var/lib/openshift/.httpd.d/frontend-*-https-template.erb provided by one of the packages in #2). In this case, individual vhost configurations under
/var/lib/openshift/.httpd.d/ likely also specify SSLProtocol and need updating. Search for them with:
grep -rIi SSLProtocol /var/lib/openshift/.httpd.d/
After updating all instances of this directive on a host, restart httpd for the changes to take effect.
service httpd restart
SSLv3 is inherently less secure than its successor Transport Socket Layer (TLS). It is considered a better security practice to disable any variation of SSL and adopt only TLS.
A Note about POODLE (CVE-2014-3566)
A vulnerability was found in the SSLv3.0 protocol. This vulnerability allows a man-in-the-middle attacker to decrypt ciphertext using a padding oracle side-channel attack. For more information about this vulnerability, refer to the following article: POODLE: SSLv3.0 vulnerability (CVE-2014-3566)
For diagnostic steps, refer to the following article: POODLE: SSLv3.0 vulnerability (CVE-2014-3566)
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