CVE Vulnerability

CVE-2021-43997

FreeRTOS versions 10.2.0 through 10.4.5 do not prevent non-kernel code from calling the xPortRaisePrivilege internal function to raise privilege. FreeRTOS versions through 10.4.6 do not prevent a third party that has already independently gained the ability to execute injected code to achieve further privilege escalation by branching directly inside a FreeRTOS MPU API wrapper function with a manually crafted stack frame. These issues affect ARMv7-M MPU ports, and ARMv8-M ports with MPU support enabled (i.e. configENABLE_MPU set to 1). These are fixed in V10.5.0 and in V10.4.3-LTS Patch 3.

7.2 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.6 Release Notes Third Party Advisory
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.3-LTS-Patch-2 Release Notes Third Party Advisory
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.5.0
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.3-LTS-Patch-3
Configurations

Configuration 1

cpe:2.3:o:amazon:freertos:10.4.3:patch1:*:*:lts:*:*:*
cpe:2.3:o:amazon:freertos:*:*:*:*:-:*:*:*
Information

Published : 2021-11-17 09:15

Updated : 2022-10-12 12:15

NVD link : CVE-2021-43997

Mitre link : CVE-2021-43997

Products Affected
No products.
CWE
NVD-CWE-noinfo