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Authentication bypass on Ubiquity’s Single Sign-On via subdomain takeover

I publicly disclosed a vulnerability that I responsibly disclosed to Ubiquity via the HackerOne platform. It concerned a subdomain takeover issue via Amazon Cloudfront (ping.ubnt.com) in combination with shared session cookies between subdomains on *.ubnt.com, which ultimately lead to a complete Authentication Bypass of their SSO system (sso.ubnt.com). It can be found here.

Belgian. IT Security. Bug Bounty Hunter.

Arne Swinnen

Belgian. IT Security. Bug Bounty Hunter.

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