CVE-2021-36154

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.85% Top 30%
Third-Party Advisory chromium.org Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/grpc/grpc-swift/releases third party advisory release notes
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274 third party advisory mailing list
https://github.com/grpc/grpc-swift/security/advisories/GHSA-4rhq-vq24-88gw third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-36154?
CVE-2021-36154 has been scored as a high severity vulnerability.
How to fix CVE-2021-36154?
To fix CVE-2021-36154, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-36154 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-36154 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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