HTTPS, HSTS, XSS, and SSRF¶
Cross Site Scripting (XSS)¶
Unlike many similar systems, the OpenStack dashboard allows the entire Unicode character set in most fields. This means developers have less latitude to make escaping mistakes that open attack vectors for cross-site scripting (XSS).
Dashboard provides tools for developers to avoid creating
XSS vulnerabilities, but they only work if developers use them
correctly. Audit any custom dashboards, paying particular
attention to use of the
is_safe with custom template tags, the
which might evaluate improperly escaped data.
Cross Site Request Forgery (CSRF)¶
Django has dedicated middleware for cross-site request forgery (CSRF). For further details, see the Django documentation.
The OpenStack dashboard is designed to discourage
developers from introducing cross-site scripting vulnerabilities
with custom dashboards as threads can be introduced. Dashboards
for vulnerabilities such as inappropriate use of the
@csrf_exempt decorator. Any dashboard that
does not follow these recommended security settings should be
carefully evaluated before restrictions are relaxed.
Cross-Frame Scripting (XFS)¶
Legacy browsers are still vulnerable to a Cross-Frame
Scripting (XFS) vulnerability, so the OpenStack dashboard
provides an option
DISALLOW_IFRAME_EMBED that allows extra
security hardening where iframes are not used in deployment.
Deploy the dashboard behind a secure HTTPS server by using a valid, trusted certificate from a recognized certificate authority (CA). Private organization-issued certificates are only appropriate when the root of trust is pre-installed in all user browsers.
Configure HTTP requests to the dashboard domain to redirect to the fully qualified HTTPS URL.
HTTP Strict Transport Security (HSTS)¶
It is highly recommended to use HTTP Strict Transport Security (HSTS).
If you are using an HTTPS proxy in front of your web
server, rather than using an HTTP server with HTTPS
functionality, modify the
variable. Refer to the
for information about modifying the
See the chapter on Secure communication for more specific recommendations and server configurations for HTTPS configurations, including the configuration of HSTS.