The first issue addressed by the social media platform is a reflected XSS security flaw that has been reported by the bug bounty hunter Muhammed “milly” Taskiran via the bug bounty platform HackerOne.
The Cross-Site-Scripting flaw affected the company domains www.tiktok.com and m.tiktok.com and its exploitation could have lead to data exfiltration.
“The researcher discovered a URL parameter reflecting its value without being properly sanitized and was able to achieve reflected XSS. In addition, researcher found an endpoint which was vulnerable to CSRF.” reads the description published by HackerOne. “The endpoint allowed to set a new password on accounts which had used third-party apps to sign-up. Researcher combined both vulnerabilities to achieve a “one click account takeover”.”
Using a fuzzing testing approach, the expert discovered a URL parameter reflecting its value without being properly sanitized. The white-hat hacker was able to achieve reflected XSS and also found an endpoint that was vulnerable to Cross-site request forgery (CSRF).
Taskiran received a $3,860 payout for the reported vulnerabilities.
(SecurityAffairs – hacking, malware)
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