If you are using the popular VPN service Hotspot Shield for online anonymity and privacy, you may inadvertently be leaking your real IP address and other sensitive information.
Developed by AnchorFree GmbH, Hotspot Shield is a VPN service available for free on Google Play Store and Apple Mac App Store with an estimated 500 million users around the world.
The service promises to "secure all online activities," hide users' IP addresses and their identities and protect them from tracking by transferring their internet and browsing traffic through its encrypted channel.However, an 'alleged' information disclosure vulnerability discovered in Hotspot Shield results in the exposure of users data, like the name of Wi-Fi network name (if connected), their real IP addresses, which could reveal their location, and other sensitive information.
The vulnerability, assigned CVE-2018-6460, has been discovered and reported to the company by an independent security researcher, Paulos Yibelo, but he made details of the vulnerability to the public on Monday after not receiving a response from the company.
According to the researcher claims, the flaw resides in the local web server (runs on a hardcoded host 127.0.0.1 and port 895) that Hotspot Shield installs on the user's machine.
This server hosts multiple JSONP endpoints, which are surprisingly accessible to unauthenticated requests as well that in response could reveal sensitive information about the active VPN service, including its configuration details.