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CVE-2024-38433— Nuvoton - CWE-305: Authentication Bypass by Primary Weakness

Quick assessment

Affected
Nuvoton NPCM7xx (Poleg) BootBlock
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.

Nuvoton NPCM7xx是中国新唐（Nuvoton）公司的一款服务器远程管理控制芯片。 Nuvoton NPCM7xx (Poleg) BootBlock v10.10.19之前版本存在安全漏洞，该漏洞源于通过主要弱点绕过身份验证，如果攻击者具有对SPI-Flash的写访问权限，便可以修改由BootBlock解析的u-boot镜像头，导致任意代码执行。

CVSS 6.7 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection
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I. Basic Information for CVE-2024-38433

Vulnerability Information
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Vulnerability Title
Nuvoton - CWE-305: Authentication Bypass by Primary Weakness
Source: CVE Program / CVE List V5
Vulnerability Description
Nuvoton - CWE-305: Authentication Bypass by Primary Weakness An attacker with write access to the SPI-Flash on an NPCM7xx BMC subsystem that uses the Nuvoton BootBlock reference code can modify the u-boot image header on flash parsed by the BootBlock which could lead to arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用基本弱点进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Nuvoton NPCM7xx 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nuvoton NPCM7xx是中国新唐（Nuvoton）公司的一款服务器远程管理控制芯片。 Nuvoton NPCM7xx (Poleg) BootBlock v10.10.19之前版本存在安全漏洞，该漏洞源于通过主要弱点绕过身份验证，如果攻击者具有对SPI-Flash的写访问权限，便可以修改由BootBlock解析的u-boot镜像头，导致任意代码执行。
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
Nuvoton NPCM7xx (Poleg) BootBlock All versions ~ v10.10.19 -

II. Public POCs for CVE-2024-38433

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III. Intelligence Information for CVE-2024-38433

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IV. Related Vulnerabilities

Same vendor: Nuvoton
Same weakness: CWE-305

V. Comments for CVE-2024-38433

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