defidollar / defidollar-core Goto Github PK
View Code? Open in Web Editor NEWSmart contracts for the DefiDollar ($DUSD) stablecoin.
Home Page: https://app.dusd.finance/
License: BSD 3-Clause "New" or "Revised" License
Smart contracts for the DefiDollar ($DUSD) stablecoin.
Home Page: https://app.dusd.finance/
License: BSD 3-Clause "New" or "Revised" License
Hi DefiDollar Security Team,
I just want to reach out to you. I'm trying to submit this report weather your interested on it.
Thanks for taking a look.
Recently, i just found some of your domain (*dusd.finance) pointing to vulnerable Third Party site "Netlify"
This issue is about your subdomain being misconfigured in Netlify
https://playground.dusd.finance/
This vulnerability can reflect to an email leak from your company, due to the situation that the attacker can receive email transactions from the company and clients.
Please refer to this report for further information;
https://hackerone.com/reports/388622
https://hackerone.com/reports/325336
Impact
I was able to hijack the domain playground.dusd.finance because an outdated DNS entry pointed to Netlify. I created a resource in that web hosting and was able to host my own content accessible via your domain. HTML files located on this domain are able to use JavaScript to access globally-scoped non-HTTPOnly cookies. For example, a cookie used to authenticate against app.dusd.finance is scoped to *dusd.finance, so a page on my hijacked domain can steal it.
This vulnerability is rated as severe due to the increased impact that can be escalated to a high severity threat and boils down to the registration of a domain by somebody else (with bad intentions) in order to gain control over one or more (sub)domains. This presents an interesting attack vector, which can even lead to several high severity risks, like this authentication bypass explained in a bug bounty report https://hackerone.com/reports/172137 by @ArneSwinnen.
The attacker can use this method to steal cookies by hosting malicious javascript/spread malware/steal money by setting up the sale/setup fake dapp application to steal private keys/ steal login details of users/spear-phishing/authentication bypass and other bad stuff.
Risk Breakdown
Risk: Severe
Difficulty to Exploit: Easy
Complexity: Easy
Weakness Categories: Deployment Misconfiguration/Stored XSS/Authentication Bypass (CWE: 16)
CVSS2 Score: 9.3 (AV:N/AC:M/Au:S/C:C/I:C/A:N)
Reference: https://0xpatrik.com/subdomain-takeover/
Remediations
Thank you
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