CVE-2021-43997

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.8 /10

CVSS v3 : 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

7.2 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

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

Configuration 1 (hide)

OR cpe:2.3:o:amazon:freertos:*:*:*:*:-:*:*:*
cpe:2.3:o:amazon:freertos:10.4.3:patch1:*:*:lts:*:*:*
History

21 Nov 2024, 06:30

Type Values Removed Values Added
References () 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/V10.4.3-LTS-Patch-2 - Release Notes, Third Party Advisory
References () https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.3-LTS-Patch-3 - () https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.3-LTS-Patch-3 -
References () https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.6 - Release Notes, Third Party Advisory () https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.6 - Release Notes, Third Party Advisory
References () https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.5.0 - () https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.5.0 -

12 Oct 2022, 00:15

Type Values Removed Values Added
Summary Amazon FreeRTOS 10.2.0 through 10.4.5 on the ARMv7-M and ARMv8-M MPU platforms does not prevent non-kernel code from calling the xPortRaisePrivilege and vPortResetPrivilege internal functions. This is fixed in 10.4.6 and in 10.4.3-LTS Patch 2. 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.
References
  • (MISC) https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.5.0 -
  • (MISC) https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.3-LTS-Patch-3 -

23 Nov 2021, 16:03

Type Values Removed Values Added
CPE cpe:2.3:o:amazon:freertos:*:*:*:*:-:*:*:*
cpe:2.3:o:amazon:freertos:10.4.3:patch1:*:*:lts:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 7.2
v3 : 7.8
References (MISC) https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.3-LTS-Patch-2 - (MISC) https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.3-LTS-Patch-2 - Release Notes, Third Party Advisory
References (MISC) https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.6 - (MISC) https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V10.4.6 - Release Notes, Third Party Advisory
CWE NVD-CWE-noinfo

17 Nov 2021, 21:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-11-17 21:15

Updated : 2024-11-21 06:30

NVD link : CVE-2021-43997

Mitre link : CVE-2021-43997

CVE.ORG link : CVE-2021-43997

JSON object : View

Products Affected

amazon

  • freertos
CWE
NVD-CWE-noinfo