CVE-2021-36154 Details
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.
A denial-of-service vulnerability has been identified in gRPC Swift versions through 1.1.1. The issue arises in the HTTP2ToRawGRPCServerCodec component, where remote attackers can cause stack consumption and uncontrolled recursion by sending numerous small messages within a single HTTP/2 frame.
Users are advised to upgrade to gRPC Swift version 1.2.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274 | CVE | Mailing ListThird Party Advisory |
| https://github.com/grpc/grpc-swift/releases | CVE | Release NotesThird Party Advisory |
| https://github.com/grpc/grpc-swift/security/advisories/GHSA-4rhq-vq24-88gw | CVE | Third Party Advisory |
| https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274 | [email protected] | Mailing ListThird Party Advisory |
| https://github.com/grpc/grpc-swift/releases | [email protected] | Release NotesThird Party Advisory |
| https://github.com/grpc/grpc-swift/security/advisories/GHSA-4rhq-vq24-88gw | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-674 | Uncontrolled Recursion | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linuxfoundation grpc swift | 1.0.0 1.1.0 1.1.1 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Jul 13, 2021 | Initial Analysis | [email protected] |