2FA Bypass Flaw Could Affect Over 70 Million Sites
Digital Defense, Inc., a leader in vulnerability and threat management solutions, announced that its Vulnerability Research Team (VRT) uncovered a previously undisclosed vulnerability affecting the cPanel & WebHost Manager (WHM) web hosting platform.
cPanel & WHM version 18.104.22.168 (90.0 Build 5) exhibits a two-factor authentication bypass flaw, vulnerable to brute force attack, resulting in a scenario where an attacker with knowledge of or access to valid credentials could bypass two-factor authentication protections on an account. Digital Defense’s internal testing demonstrated that an attack can be accomplished in minutes.
“Our standard practice is to work in tandem with organizations on a coordinated disclosure effort to facilitate a prompt resolution to a vulnerability. The Digital Defense VRT reached out to cPanel who worked diligently on a patch. We will continue outreach to customers ensuring they are aware and able to take action to mitigate any potential risk introduced by the vulnerability,” states Mike Cotton, senior vice president of engineering at Digital Defense.”
Exploiting this bug also requires that attackers have valid credentials for a targeted account, but these can be obtained from phishing the website owner.