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CVE-2023-51394— Potential DoS for EFR32xxx parts in high traffic environments due to null buffer dereference / crash

Quick assessment

Affected
silabs.com Ember ZNet SDK
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.

Silicon Labs Ember ZNet是美国芯科科技（Silicon Labs）公司的一个协议栈软件。 Silicon Labs Ember ZNet SDK v7.4.0之前版本存在代码问题漏洞，该漏洞源于存在NULL指针取消引用，可能导致系统崩溃。

CVSS 5.3 · Medium EPSS 0.52% · P43

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-51394

Vulnerability Information
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Vulnerability Title
Potential DoS for EFR32xxx parts in high traffic environments due to null buffer dereference / crash
Source: CVE Program / CVE List V5
Vulnerability Description
High traffic environments may result in NULL Pointer Dereference vulnerability in Silicon Labs's Ember ZNet SDK before v7.4.0, causing a system crash.
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
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Silicon Labs Ember ZNet 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Silicon Labs Ember ZNet是美国芯科科技（Silicon Labs）公司的一个协议栈软件。 Silicon Labs Ember ZNet SDK v7.4.0之前版本存在代码问题漏洞，该漏洞源于存在NULL指针取消引用，可能导致系统崩溃。
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
silabs.com Ember ZNet SDK 0 ~ 7.4.0 -

II. Public POCs for CVE-2023-51394

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III. Intelligence Information for CVE-2023-51394

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Other References for CVE-2023-51394 (1)

Same Patch Batch · silabs.com · 2024-02-23 · 3 CVEs total

CVE-2023-51392 6.2 MEDIUM Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-C
CVE-2023-51393 5.3 MEDIUM Potential DoS due to BusFault and Assert in Ember ZNet legacy packet buffer

IV. Related Vulnerabilities

Same product: Ember ZNet SDK
Same vendor: silabs.com
Same weakness: CWE-476