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CVE-2024-38373— FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser

Quick assessment

Affected
FreeRTOS FreeRTOS-Plus-TCP
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeRTOS-Plus-TCP是FreeRTOS开源的一种适用于 FreeRTOS 的可扩展的开源和线程安全 TCP/IP 堆栈。 FreeRTOS-Plus-TCP 4.1.1之前版本存在安全漏洞，该漏洞源于DNS 响应解析器中存在缓冲区过度读取。

CVSS 9.6 · Critical EPSS 0.61% · P48

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2024-38373

Vulnerability Information
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Vulnerability Title
FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser
Source: CVE Program / CVE List V5
Vulnerability Description
FreeRTOS-Plus-TCP is a lightweight TCP/IP stack for FreeRTOS. FreeRTOS-Plus-TCP versions 4.0.0 through 4.1.0 contain a buffer over-read issue in the DNS Response Parser when parsing domain names in a DNS response. A carefully crafted DNS response with domain name length value greater than the actual domain name length, could cause the parser to read beyond the DNS response buffer. This issue affects applications using DNS functionality of the FreeRTOS-Plus-TCP stack. Applications that do not use DNS functionality are not affected, even when the DNS functionality is enabled. This vulnerability has been patched in version 4.1.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5
Vulnerability Title
FreeRTOS-Plus-TCP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeRTOS-Plus-TCP是FreeRTOS开源的一种适用于 FreeRTOS 的可扩展的开源和线程安全 TCP/IP 堆栈。 FreeRTOS-Plus-TCP 4.1.1之前版本存在安全漏洞，该漏洞源于DNS 响应解析器中存在缓冲区过度读取。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeRTOS FreeRTOS-Plus-TCP >= 4.0.0, <= 4.1.0 -

II. Public POCs for CVE-2024-38373

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7628 chars
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III. Intelligence Information for CVE-2024-38373

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Other References for CVE-2024-38373 (1)

IV. Related Vulnerabilities

Same product: FreeRTOS-Plus-TCP
Same vendor: FreeRTOS
Same weakness: CWE-126

V. Comments for CVE-2024-38373

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