CVE-2023-4020— Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory
Quick assessment
Affected
silabs.com GSDK
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 TrustZone是美国芯科科技（Silicon Labs）公司的一项安全软件技术。 Silicon Labs TrustZone存在输入验证错误漏洞，该漏洞源于库函数未执行用户输入验证，导致攻击者可以从非安全存储器区域读取或写入安全区域中的存储器。
Possible ATT&CK Techniques 2 AI
T1068 · Exploitation for Privilege Escalation T1055 · Process Injection
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I. Basic Information for CVE-2023-4020
Vulnerability Information
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Vulnerability Title
Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory
Source: CVE Program / CVE List V5
Vulnerability Description
An unvalidated input in a library function responsible for communicating between secure and non-secure memory in Silicon Labs TrustZone implementation allows reading/writing of memory in the secure region of memory from the non-secure region of memory.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Silicon Labs TrustZone 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Silicon Labs TrustZone是美国芯科科技（Silicon Labs）公司的一项安全软件技术。 Silicon Labs TrustZone存在输入验证错误漏洞，该漏洞源于库函数未执行用户输入验证，导致攻击者可以从非安全存储器区域读取或写入安全区域中的存储器。
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)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| silabs.com | GSDK | 1.0 ~ 4.4.0 | - |
|
II. Public POCs for CVE-2023-4020
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2023-4020 (1)
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V. Comments for CVE-2023-4020
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