title: Multiple DoS Attack Vectors in sflow packet handling
description: sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume large amounts of memory resulting in a denial of service.
problem types: CWE-20 Improper Input Validation
affected:
{
platforms: Go
product: goflow
vendor: Cloudflare
versions:
lessThan: 3.4.4, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
solutions: Upgrade goflow at least to version 3.4.4
workarounds: Make sure that the goflow collector is not publicly reachable.