Piwik

Why

Piwik is a self-hosted alternative to Google Analytics (GA). Unlike GA, Piwik is FOSS and can be self-hosted, so we're not dependent on sending (sensitive user's) data to an external service provider.

Security Concerns

When first implemented in 2017, Piwik appears to be the best self-hosted GA alternative. That said, it is not without issues. Specifically, we found many eyebrow-rasising red flags about the project's security history & practices

Note: In the end, piwik is not a publicly accessible service. As such, the usual concerns (SQL Injection, XSS attacks, etc) are moot if the service runs behind http basic auth. Therefore, we use Piwik on "basic auth lockdown" until a better option is available

Requires set_ini()

The piwik project expects (in fact, very explicitly requires) the set_ini() function to be enabled.

Enabling the set_ini() function would effectively allow any php site to override all our php hardening made in php.ini. For example, we disabled exec() that prevents php from executing commands on our server. If Piwik can execute set_ini, then it could re-enable the exec() function. Combine that with bad input sanitizing, and we have a huge security issue. This is why set_ini() is necessarily disabled on any php web server that wants any baseline for security.

It is absurd for an application to *require* set_ini() to be enabled, and--in fact--this is exactly what Piwik does. During the install process, Piwik errors-out (from 'core/testMinimumPhpVersion.php') if the function set_ini() is disabled.

Moreover, this issue was raised to them in 2009 (7 years ago from the time of writing), and the offical response was "wontfix"

CVE turnaround

TODO

Opaque Security Audits

TODO