Author claims a Zero Day vulnerability in Firefox for Android, which works on Firefox versions 23/24/26 (Nightly) Hacker Selling exploit with a starting price of $460 only. The exploit forces the mobile Firefox browser to download and execute a malicious app, on just visiting a malicious link only. An attacker can use social engineering tricks, phishing attackers get the user to click a. malicious link and thereby exploiting them. The vulnerability was spotted by Malware Intelligence Analyst at Malwarebytes.
Source: https://thehackernews.com/2013/09/Android-Firefox-Zero-Day-Exploit-for-Sale.html