High severity · published Jul 9, 2021
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…
7.5
CVSS
2.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GS
Grpc Swift · Linuxfoundation
1.0.0; 1.1.0; 1.1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36154
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36154
Mailing List
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274
Release Notes
https://github.com/grpc/grpc-swift/releases
Third Party Advisory
https://github.com/grpc/grpc-swift/security/advisories/GHSA-4rhq-vq24-88gw
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