High
Cloud Foundry Foundation
GrootFS does not validate DiffIDs, allowing specially crafted images to poison the grootfs volume cache. For example, this could allow an attacker to provide an image layer that GrootFS would consider to be the Ubuntu base layer.
Users of affected versions should apply the following mitigations or upgrades:
This issue was responsibly reported by the GrootFS team.
2017-10-09: Initial vulnerability report published.