Cloud Foundry Foundation
Cloud Foundry UAA, versions prior to 73.0.0, falls back to appending “unknown.org” to a user’s email address when one is not provided and the user name does not contain an @ character. This domain is held by a private company, which leads to attack vectors including password recovery emails sent to a potentially fraudulent address. This would allow the attacker to gain complete control of the user’s account.
Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:
This issue was responsibly reported by Kristian Kraljic from SAP.
2019-05-14: Initial vulnerability report published.