Sunday, July 21, 2024
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DOM-based XSS Vulnerability Affected 685 Million Users of Tinder, Shopify, Western Union, and Imgur

Security researchers from VPNMentor detected multiple client-side vulnerabilities that allow hacker’s to access users’ profiles and details.

DOM-based XSS also called as type-0 XSS, this vulnerability allows an attacker to craft a malicious URL and if the URL visited by another user, then the javascript will be executed in the user’s browser.

It allows an attacker to steal victim’s session token, login credentials, performing arbitrary actions and to capture the keystrokes.

VPNMentor notified Tinder about the vulnerabilities through their responsible disclosure program. With further analysis, VPNMentor researchers learned that vulnerable endpoint isn’t owned by Tinder, but by branch.io, an attribution platform used by many big corporations around the globe.

They also found that the same vulnerable endpoint was used by many big websites such as Shopify, Yelp, Western Union, and Imgur which puts 685 million users could be at risk.

DOM-based XSS – Redirection Strategy and Validation Bypass

The researchers initial finding was with the endpoint https://go.tinder.com/amp-iframe-redirect which prone to multiple vulnerabilities. With the displayed script redirect_strategy is “INJECTIONA” and scheme_redirect is “INJECTIONB” was found.

client-side vulnerabilities

Attackers can modify the redirect_strategy to a dom-XSS payload results in the execution of client-side code with the context of Tinder in the user browser.

client-side vulnerabilities

Also, researchers observed the validation functions can be bypassed because indexOf will find “https://“

Researchers named few sites affected with the vulnerability such as RobinHood, Shopify, Canva, Yelp, Western Union, Letgo, Cuvva, imgur, Lookout, fair.com and more.

Now the vulnerability has been fixed if you have used Tinder or any of the other affected sites recently, it recommended to ensure that your account hasn’t been compromised. It’s a good idea to change your password ASAP.”

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Guru baran
Guru baranhttps://gbhackers.com
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

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