TikTok fixed security issues that could have led one-click account takeover

Source: Messagero

TikTok has addressed a couple of security issues that could have been chained to led account takeover.

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).

“The endpoint enabled me to set a new password on accounts which had used third-party apps to sign-up.” Taskiran explained. “I combined both vulnerabilities by crafting a simple JavaScript payload – triggering the CSRF – which I injected into the vulnerable URL parameter from earlier, to archive a “one click account takeover.”

Taskiran created a simple JavaScript payload that chained the XSS and the CSRF vulnerabilities. The script first triggers the CSRF issue, then injected into the vulnerable URL parameter leading to a one-click account takeover.

Taskiran received a $3,860 payout for the reported vulnerabilities.

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Pierluigi Paganini

(SecurityAffairs – hacking, malware)

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Pierluigi Paganini

Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer. Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US. Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines. Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.