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CVE-2021-41036

Quick assessment

Affected
The Eclipse Foundation Eclipse Paho MQTT C Client
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.

MQTT（Message Queuing Telemetry Transport,消息队列遥测传输）是一个ISO 标准（ISO/IEC PRF 20922）下基于发布 (Publish)/订阅 (Subscribe)范式的消息协议，它工作在TCP/IP协议族上，是为硬件性能低下的远程设备以及网络状况不好的情况下而设计的发布/订阅型消息协议。 Eclipse Paho MQTT C Client 1.1之前版本存在缓冲区错误漏洞，该漏洞源于客户端不会检查readpacket中的rem_len大小。

AI Predicted 7.5 Difficulty: Moderate EPSS 1.20% · P67

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-41036

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In versions prior to 1.1 of the Eclipse Paho MQTT C Client, the client does not check rem_len size in readpacket.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
MQTT 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MQTT（Message Queuing Telemetry Transport,消息队列遥测传输）是一个ISO 标准（ISO/IEC PRF 20922）下基于发布 (Publish)/订阅 (Subscribe)范式的消息协议，它工作在TCP/IP协议族上，是为硬件性能低下的远程设备以及网络状况不好的情况下而设计的发布/订阅型消息协议。 Eclipse Paho MQTT C Client 1.1之前版本存在缓冲区错误漏洞，该漏洞源于客户端不会检查readpacket中的rem_len大小。
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
The Eclipse Foundation Eclipse Paho MQTT C Client unspecified ~ 1.1.0 -

II. Public POCs for CVE-2021-41036

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III. Intelligence Information for CVE-2021-41036

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Other References for CVE-2021-41036 (1)

IV. Related Vulnerabilities

Same vendor: The Eclipse Foundation
Same weakness: CWE-787

V. Comments for CVE-2021-41036

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