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CVE-2023-4785— Denial of Service in gRPC Core

Quick assessment

Affected
Google gRPC
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

gRPC是gRPC开源的一种现代、开源、高性能的远程过程调用 (RPC) 框架。 gRPC 1.23版本存在安全漏洞，该漏洞源于TCP服务器中缺乏错误处理，允许攻击者通过启动与服务器的大量连接来导致拒绝服务。

CVSS 7.5 · High EPSS 0.77% · P54

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-4785

Vulnerability Information
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Vulnerability Title
Denial of Service in gRPC Core
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
Source: CVE Program / CVE List V5
Vulnerability Title
gRPC 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
gRPC是gRPC开源的一种现代、开源、高性能的远程过程调用 (RPC) 框架。 gRPC 1.23版本存在安全漏洞，该漏洞源于TCP服务器中缺乏错误处理，允许攻击者通过启动与服务器的大量连接来导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Google gRPC 1.56.0 ~ 1.56.1 -

II. Public POCs for CVE-2023-4785

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III. Intelligence Information for CVE-2023-4785

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Patches & Fixes for CVE-2023-4785 (4)

IV. Related Vulnerabilities

Same product: gRPC
Same vendor: Google
Same weakness: CWE-248

V. Comments for CVE-2023-4785

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