CVE-2023-4785

HIGH EPSS 47.2%
Published Sep 13, 20232y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
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Published Sep 13, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

Description

Lack of error handling in the TCP server in Google's gRPC starting version 1.23 on posix-compatible platforms (ex. Linux) allows an attacker to cause a denial of service by initiating a significant number of connections with the server. Note that gRPC C++ Python, and Ruby are affected, but gRPC Java, and Go are NOT affected.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
47.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-248

Affected Products 4

VendorProductVersionRange
grpcgrpc*≥1.23.0  –  <1.53.2
grpcgrpc*≥1.54.0  –  <1.54.3
grpcgrpc*≥1.55.0  –  <1.55.3
grpcgrpc1.56.0any

References 5

  • github.com https://github.com/grpc/grpc/pull/33656
    Issue TrackingPatch
  • github.com https://github.com/grpc/grpc/pull/33667
    Issue Tracking
  • github.com https://github.com/grpc/grpc/pull/33669
    Issue Tracking
  • github.com https://github.com/grpc/grpc/pull/33670
    Issue Tracking
  • github.com https://github.com/grpc/grpc/pull/33672
    Issue Tracking

Remediation

  • github.com https://github.com/grpc/grpc/pull/33656
    Issue TrackingPatch