CVE-2020-10062— Packet length decoding error in MQTT
Quick assessment
Affected
zephyrproject-rtos zephyr
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.
Zephyr是美国Linux基金会的一套开源的小型的可缩放的实时操作系统。 Zephyr 2.2.0及之后版本（2.3.0版本已修复）中的MQTT数据包长度解码器存在安全漏洞。攻击者可利用该漏洞导致内存损坏并可能执行代码。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2020-10062
Vulnerability Information
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Vulnerability Title
Packet length decoding error in MQTT
Source: CVE Program / CVE List V5
Vulnerability Description
An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
Off-by-one错误
Source: CVE Program / CVE List V5
Vulnerability Title
Zephyr 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zephyr是美国Linux基金会的一套开源的小型的可缩放的实时操作系统。 Zephyr 2.2.0及之后版本（2.3.0版本已修复）中的MQTT数据包长度解码器存在安全漏洞。攻击者可利用该漏洞导致内存损坏并可能执行代码。
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 |
|---|---|---|---|---|
| zephyrproject-rtos | zephyr | 2.2.0 ~ unspecified | - |
|
II. Public POCs for CVE-2020-10062
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2020-10062 (1)
Other References for CVE-2020-10062 (3)
-
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-84 x_refsource_MISC
Same Patch Batch · zephyrproject-rtos · 2020-06-05 · 6 CVEs total
| CVE-2020-10070 | 9.0 CRITICAL | MQTT buffer overflow on receive buffer |
| CVE-2020-10071 | 9.0 CRITICAL | Insufficient publish message length validation in MQTT |
| CVE-2020-10061 | 8.1 HIGH | Error handling invalid packet sequence |
| CVE-2020-10063 | 6.8 MEDIUM | Remote Denial of Service in CoAP Option Parsing Due To Integer Overflow |
| CVE-2020-10068 | 5.1 MEDIUM | Zephyr Bluetooth DLE duplicate requests vulnerability |
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V. Comments for CVE-2020-10062
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