CVE-2021-36154

HIGH

gRPC Swift <= 1.1.1 - Denial of Service via HTTP/2 Frame Message Flood

Title source: llm
STIX 2.1

Description

HTTP2ToRawGRPCServerCodec in gRPC Swift 1.1.1 and earlier allows remote attackers to deny service via the delivery of many small messages within a single HTTP/2 frame, leading to Uncontrolled Recursion and stack consumption.

References (3)

Core 3
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/grpc/grpc-swift/releases
Mailing List, Third Party Advisory x_refsource_misc
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274

Scores

CVSS v3 7.5
EPSS 0.0208
EPSS Percentile 79.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-674
Status published
Products (4)
linuxfoundation/grpc_swift 1.0.0
linuxfoundation/grpc_swift 1.1.0
linuxfoundation/grpc_swift 1.1.1
SwiftURL/github.com/grpc/grpc-swift 0 - 1.2.0SwiftURL
Published Jul 09, 2021
Tracked Since Feb 18, 2026