Access Control Flaw in Trusted Firmware-M Affecting ARM Devices
CVE-2021-40327

5.9MEDIUM

Key Information:

Vendor

Trustedfirmware

Status
Trusted Firmware-m
Vendor
CVE Published:
13 January 2022

What is CVE-2021-40327?

An access control vulnerability in Trusted Firmware-M version 1.4.0, specifically when using Profile Small, allows non-secure processing environments (NSPE) to gain unauthorized access to secure keys managed by the Crypto service. This flaw arises due to a lack of necessary authorization checks between a caller and a key owner, thus potentially compromising sensitive information.

References

https://developer.arm.com/support/arm-security-updates
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https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/
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https://tf-m-user-guide.trustedfirmware.org/docs/security...
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CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.