PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader signed by PAX can be used.  The attacker must have physical USB access to the device in order to exploit this vulnerability.
Published 2024-01-15 14:15:25
Updated 2024-10-10 16:15:07
Source CERT.PL
View at NVD,   CVE.org

Products affected by CVE-2023-4818

Exploit prediction scoring system (EPSS) score for CVE-2023-4818

0.05%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 17 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-4818

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.6
HIGH CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
0.9
6.0
NIST 2024-01-19

CWE ids for CVE-2023-4818

  • 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: cvd@cert.pl (Secondary)
  • The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
    Assigned by:
    • cvd@cert.pl (Secondary)
    • nvd@nist.gov (Primary)

References for CVE-2023-4818

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