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SilabsCVELIST:CVE-2023-4020

HistoryDec 15, 2023 - 8:37 p.m.

CVE-2023-4020 Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory

2023-12-1520:37:20

CWE-20

Silabs

www.cve.org

cve-2023-4020

silicon labs

psa attestation

trustzone

unvalidated input

secure memory access

9 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

9.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.5%

JSON

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.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "GSDK",
    "vendor": "silabs.com",
    "versions": [
      {
        "lessThan": "4.4.0",
        "status": "affected",
        "version": "1.0",
        "versionType": "patch"
      }
    ]
  }
]

References

community.silabs.com/069Vm0000004b95IAA

github.com/SiliconLabs/gecko_sdk/releases

9 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

9.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.5%

JSON

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