Default settings in Apache may decloak Tor hidden services
Websites that rely on the Tor anonymity service to cloak their server address may be leaking their geographic location and other sensitive information thanks to a setting that’s turned on by default in many releases of Apache, the world’s most widely used Web server.
The information leak has long been known to careful administrators who take the time to read Tor documentation, but that hasn’t prevented some Tor hidden services from falling victim to it. To plug the hole, darkweb sites that run Apache must disable the mod_status module that by default sets up a server status page displaying a variety of potentially sensitive information about the servers. Details include the number of requests per second sent to the server, the most recent HTTP requests received, CPU usage, and in some cases the approximate longitude of the server.
It would appear some hidden services still haven’t figured out that many Apache installations display the data by default. In a blog post published over the weekend, an anonymous poster wrote:
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