CVE-2023-32732 Denial-of-Service in gRPC

2023-06-0910:48:15

CWE-440

Google

www.cve.org

vulnerability

grpc

denial-of-service

base64 encoding

http2

proxy

upgrade

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

5.8 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.0%

JSON

gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for -bin suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309 https://www.google.com/url

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "gRPC",
    "vendor": "Google",
    "versions": [
      {
        "lessThan": "1.54",
        "status": "affected",
        "version": "1.53",
        "versionType": "custom"
      }
    ]
  }
]