title: CF clusters with NGINX in front of them may be vulnerable to DoS
description: Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse proxies in front of the Gorouters, is potentially vulnerable to denial-of-service attacks in which an unauthenticated malicious attacker can send specially-crafted HTTP requests that may cause the Gorouters to be dropped from the NGINX backend pool.
problem types: CWE-404: Improper Resource Shutdown or Release
affected:
{
product: Routing
vendor: Cloud Foundry
versions:
lessThan: 0.204.0, status: affected, version: All, versionType: custom
}
{
product: CF Deployment
vendor: Cloud Foundry
versions:
lessThan: 13.13.0, status: affected, version: All, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.7
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
version: 3.0
]