CVE-2021-27562 Information

Description

In Arm Trusted Firmware M through 1.2 the NS world may trigger a system halt an overwrite of secure data or the printing out of secure data when calling secure functions under the NSPE handler mode.

CVSS Vector

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

Reference

https://developer.arm.com/support/arm-security-updates https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5