Severity
Medium
Vendor
Cloud Foundry Foundation
Description
Cloud Controller (CAPI) is vulnerable to a denial-of-service attack in which a developer can push a service broker that (accidentally or maliciously) causes CC instances to timeout and fail. An attacker can leverage this vulnerability to cause an inability for anyone to push or manage apps.
Affected Cloud Foundry Products and Versions
Severity is medium unless otherwise noted.
- CAPI
- All versions prior to 1.122.0
- CF Deployment
- All versions prior to 17.1.0
Mitigation
Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:
- CAPI
- Upgrade all versions to 1.122.0 or greater
- CF Deployment
- Upgrade all versions to 17.1.0 or greater
**and** configure [cc.max_concurrent_service_broker_requests](https://bosh.io/jobs/cloud_controller_ng?source=github.com/cloudfoundry/capi-release&version=1.122.0#p%3dcc.max_concurrent_service_broker_requests) to a reasonable value (e.g. 3).
Credit
This issue was responsibly reported by Florian Braun (SAP SE)
History
2022-03-25: Initial vulnerability report published.
