Vulnerability CVE-2021-36154
Published: 2021-07-09

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.

Type:

CWE-674

 (Uncontrolled Recursion)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Linuxfoundation -> Grpc swift 

 References:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274
https://github.com/grpc/grpc-swift/security/advisories/GHSA-4rhq-vq24-88gw
https://github.com/grpc/grpc-swift/releases
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