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CVE-2024-7726— Arbitrary Code execution via exposed JTAG port in Kioxia CM6, PM6, PM7

Quick assessment

Affected
Kioxia CM6
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.

Kioxia PM6等都是日本铠侠（Kioxia）公司的一系列企业级 SAS 写入密集型 SSD。 Kioxia CM6、PM6和PM7存在安全漏洞，该漏洞源于存在未经身份验证的可访问JTAG端口，导致攻击者可以完全访问驱动器内两个主CPU内核上的固件和内存，包括执行任意代码、修改固件执行流程和数据或在启动期间绕过固件签名验证。

AI Predicted 6.1 Difficulty: Easy EPSS 0.40% · P33
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I. Basic Information for CVE-2024-7726

Vulnerability Information
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Vulnerability Title
Arbitrary Code execution via exposed JTAG port in Kioxia CM6, PM6, PM7
Source: CVE Program / CVE List V5
Vulnerability Description
There exists an unauthenticated accessible JTAG port on the Kioxia PM6, PM7 and CM6 devices - On the Kioxia CM6, PM6 and PM7 disk drives it was discovered that the 2 main CPU cores of the SoC can be accessed via an open JTAG debug port that is exposed on the drive’s circuit board. Due to the wide cutout of the enclosures, the JTAG port can be accessed without having to open the disk enclosure. Utilizing the JTAG debug port, an attacker with (temporary) physical access can get full access to the firmware and memory on the 2 main CPU cores within the drive including the execution of arbitrary code, the modification of firmware execution flow and data or bypassing the firmware signature verification during boot-up.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Kioxia CM6、PM6和PM7 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kioxia PM6等都是日本铠侠（Kioxia）公司的一系列企业级 SAS 写入密集型 SSD。 Kioxia CM6、PM6和PM7存在安全漏洞，该漏洞源于存在未经身份验证的可访问JTAG端口，导致攻击者可以完全访问驱动器内两个主CPU内核上的固件和内存，包括执行任意代码、修改固件执行流程和数据或在启动期间绕过固件签名验证。
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
Kioxia CM6 0 ~ 1.66.1 -
Kioxia PM7 0 -
Kioxia PM6 0 -

II. Public POCs for CVE-2024-7726

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III. Intelligence Information for CVE-2024-7726

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Vendor Advisories for CVE-2024-7726 (1)

IV. Related Vulnerabilities

Same weakness: CWE-306

V. Comments for CVE-2024-7726

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