HexBrain

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

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original