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CVE-2022-26942— Multiple missing pointer validation checks in trusted execution module in Motorola MTM5000

Quick assessment

Affected
Motorola Mobile Radio
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.

Motorola MTM5000是美国摩托罗拉（Motorola）公司的一种移动收音机。 Motorola MTM5000 存在安全漏洞，该漏洞源于缺乏对传递到可信执行环境 (TEE) 模块的参数的指针验证，攻击者利用该漏洞可以在 TEE 中获得安全监管代码执行， 导致对 TEE 模块的全面破坏，暴露了设备密钥以及 TETRA 加密原语。

CVSS 8.2 · High EPSS 0.21% · P11
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I. Basic Information for CVE-2022-26942

Vulnerability Information
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Vulnerability Title
Multiple missing pointer validation checks in trusted execution module in Motorola MTM5000
Source: CVE Program / CVE List V5
Vulnerability Description
The Motorola MTM5000 series firmwares lack pointer validation on arguments passed to trusted execution environment (TEE) modules. Two modules are used, one responsible for KVL key management and the other for TETRA cryptographic functionality. In both modules, an adversary with non-secure supervisor level code execution can exploit the issue in order to gain secure supervisor code execution within the TEE. This constitutes a full break of the TEE module, exposing the device key as well as any TETRA cryptographic keys and the confidential TETRA cryptographic primitives.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
非可信指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Motorola MTM5000 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Motorola MTM5000是美国摩托罗拉（Motorola）公司的一种移动收音机。 Motorola MTM5000 存在安全漏洞，该漏洞源于缺乏对传递到可信执行环境 (TEE) 模块的参数的指针验证，攻击者利用该漏洞可以在 TEE 中获得安全监管代码执行， 导致对 TEE 模块的全面破坏，暴露了设备密钥以及 TETRA 加密原语。
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
Motorola Mobile Radio MTM5000 -

II. Public POCs for CVE-2022-26942

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III. Intelligence Information for CVE-2022-26942

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Other References for CVE-2022-26942 (1)

Same Patch Batch · Motorola · 2023-10-19 · 4 CVEs total

CVE-2022-26941 9.6 CRITICAL Format string vulnerability in AT+CTGL command in Motorola MTM5000
CVE-2022-26943 8.8 HIGH Weak PRNG entropy source used for authentication challenge generation in Motorola MTM5000
CVE-2022-27813 8.1 HIGH Unconfigured memory protection modules in Motorola MTM5000

IV. Related Vulnerabilities

Same product: Mobile Radio
Same vendor: Motorola
Same weakness: CWE-822

V. Comments for CVE-2022-26942

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