VulnerabilityModified
CVE-2021-36154
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.
HIGH 7.5EPSS 2.08%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.08% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-674
- Affected
- linuxfoundation/grpc swift
- Source
- cve@mitre.org
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274Mailing List, Third Party Advisory
- https://github.com/grpc/grpc-swift/releasesRelease Notes, Third Party Advisory
- https://github.com/grpc/grpc-swift/security/advisories/GHSA-4rhq-vq24-88gwThird Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274Mailing List, Third Party Advisory
- https://github.com/grpc/grpc-swift/releasesRelease Notes, Third Party Advisory
- https://github.com/grpc/grpc-swift/security/advisories/GHSA-4rhq-vq24-88gwThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.