PT-2023-27319 · Silicon · Silicon Labs Trustzone

Published 2023-12-15 · Updated 2024-09-25 · CVE-2023-4020

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Silicon Labs TrustZone implementation (affected versions not specified)

Description The issue is related to an unvalidated input in a library function that handles communication between secure and non-secure memory in the Silicon Labs TrustZone implementation. This allows for reading and writing of memory in the secure region from the non-secure region.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Out of bounds Read

Memory Corruption

Weakness Enumeration

CWE-125

CWE-787

Related Identifiers

CVE-2023-4020

Affected Products

Silicon Labs Trustzone

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2023-4020 · Security Note
• https://osv.dev/vulnerability/CVE-2023-4020 · Vendor Advisory
• https://github.com/SiliconLabs/gecko_sdk/releases · Note
• https://t.me/cvenotify/63840 · Telegram Post
• https://t.me/cvenotify/64261 · Telegram Post
• https://community.silabs.com/069Vm0000004b95IAA · Note
• https://twitter.com/CVEnew/status/1735946018494222502 · Twitter Post