HexBrain

Brave Software · Report #221461

homograph-attack (unicode vuln)

Duplicatestatus
1upvotes
10 Aug 2017disclosed

How it was found

Hi team Summary: Affacted product appears identicaly different websites domains attacker uses unicode to register domains that look identical to real domains ,These fake domains can be used to fool users into signing into a fake website, thereby handing over their login credentials to an attacker... example to demonstrate how an attacker can register their own domain that looks identical to another company’s domain in the browser, ‘epic.com’(healthcare site) by registering fake site unicode domain: http://www.xn--e1awd7f.com/

and affected product show unicode domain looks like real domain {F176374} {F176375}

Products affected:

Brave 1.0.19 (Tested on android 6.0.1;nexus5)

Steps To Reproduce: 1.In browser open http://www.xn--e1awd7f.com/ unicode domain demo 2. you can see brave browser show fake site like real site in address bar

The fix: make sure it's display the punycode ..and warning or proper handlings References: http://www.crypto-it.net/eng/attacks/homograph-attack.html https://www.wordfence.com/blog/2017/04/chrome-firefox-unicode-phishing/

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original