Vulnerability Details : CVE-2023-4020

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.
Published 2023-12-15 21:15:09
Updated 2024-09-25 16:15:09
Source Silicon Labs
View at NVD,   CVE.org

Products affected by CVE-2023-4020

Exploit prediction scoring system (EPSS) score for CVE-2023-4020

EPSS FAQ
0.20%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 40 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-4020

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
9.1
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.9
5.2
 NIST
9.0
 CRITICAL CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
2.5
5.8
 Silicon Labs

CWE ids for CVE-2023-4020

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: product-security@silabs.com (Secondary)
  • The product reads data past the end, or before the beginning, of the intended buffer.
    Assigned by: product-security@silabs.com (Secondary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: product-security@silabs.com (Secondary)

References for CVE-2023-4020

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