CVE-2023-32732— Denial-of-Service in gRPC
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存在安全漏洞，该漏洞源于 -bin 后缀标头的 base64 编码错误，导致 gRPC 服务器断开连接。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-32732
Vulnerability Information
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Vulnerability Title
Denial-of-Service in gRPC
Source: CVE Program / CVE List V5
Vulnerability Description
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
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
预期行为违背
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存在安全漏洞，该漏洞源于 -bin 后缀标头的 base64 编码错误，导致 gRPC 服务器断开连接。
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
II. Public POCs for CVE-2023-32732
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2023-32732 (1)
Mailing List Discussions for CVE-2023-32732 (2)
Same Patch Batch · Google · 2023-06-09 · 3 CVEs total
| CVE-2023-1428 | 7.5 HIGH | Denial-of-Service in gRPC |
| CVE-2023-32731 | 7.4 HIGH | Information leak in gRPC |
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V. Comments for CVE-2023-32732
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