title: Denial of Service in gRPC Core
description: Lack of error handling in the TCP server in Google's gRPC starting version 1.23 on posix-compatible platforms (ex. Linux) allows an attacker to cause a denial of service by initiating a significant number of connections with the server. Note that gRPC C++ Python, and Ruby are affected, but gRPC Java, and Go are NOT affected.
problem types: CWE-248
affected:
{
defaultStatus: unaffected
platforms: Posix-compatible platforms
product: gRPC
repo: https://github.com/grpc/grpc
vendor: Google
versions:
lessThan: 1.23, status: unaffected, version: 0, versionType: custom
status: unaffected, version: 1.57
changes: [at: 1.56.2, status: unaffected], lessThanOrEqual: 1.56.1, status: affected, version: 1.56.0, versionType: custom
changes: [at: 1.55.3, status: unaffected], lessThanOrEqual: 1.55.2, status: affected, version: 1.55.0, versionType: custom
changes: [at: 1.54.3, status: unaffected], lessThanOrEqual: 154.2, status: affected, version: 1.54.0, versionType: custom
changes: [at: 1.53.2, status: unaffected], lessThanOrEqual: 1.53.1, status: affected, version: 1.53.0, 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
]
format: CVSS
scenarios: GENERAL