HackerOne · Report #1112679
Dangling cloud instance at vpn.inverselink.com
Validstatus
lowseverity
$500bounty
29upvotes
11 Mar 2021disclosed
How it was found
Summary: vpn.inverselink.com points to 54.202.130.246, which is currently serving a TLS certificate for Workday, Inc. This seems to indicate that the subdomain is no longer controlled by HackerOne.
Optional: Supporting Material/References (Screenshots)
% dig vpn.inverselink.com +short
54.202.130.246
% curl -v https://vpn.inverselink.com
* Trying 54.202.130.246...
* TCP_NODELAY set
* Connected to vpn.inverselink.com (54.202.130.246) port 443 (#0)
[...]
* Server certificate:
* subject: C=US; ST=California; L=Pleasanton; O=Workday Inc.; CN=*.workdaysuv.com
Optional: Did you use recon data made available by HackerOne to find this vulnerability?
no
Impact
Subdomain takeover if Workday releases this IP address