CVE-2021-27421: NXP MCUXpresso SDK Integer Overflow or Wraparound

Q: What is CVE-2021-27421?

CVE-2021-27421 is a vulnerability in NXP MCUXpresso SDK versions prior to 2.8.2 that allows an attacker to access memory locations outside the bounds of a specified array.

Q: How severe is CVE-2021-27421?

CVE-2021-27421 has a severity rating of 9.8 out of 10, indicating a critical vulnerability.

Q: Which software versions are affected by CVE-2021-27421?

NXP MCUXpresso SDK versions prior to 2.8.2 are affected by CVE-2021-27421.

Q: What is the impact of CVE-2021-27421?

CVE-2021-27421 can lead to unexpected behavior, such as segmentation faults, when assigning a specific block of memory from the heap.

Q: How can CVE-2021-27421 be fixed?

To fix CVE-2021-27421, update to NXP MCUXpresso SDK version 2.8.2 or later.

Published May 3, 2022

Updated

NXP MCUXpresso SDK versions prior to 2.8.2 are vulnerable to integer overflow in SDKMalloc function, which could allow to access memory locations outside the bounds of a specified array, leading to unexpected behavior such segmentation fault when assigning a particular block of memory from the heap via malloc.

Affected Software

30 affected components

NXP Mcuxpresso Software Development Kit<2.8.2

Multiple Amazon FreeRTOS, Version 10.4.1

Multiple Apache Nuttx OS, Version 9.1.0

Multiple ARM CMSIS-RTOS2, versions prior to 2.1.3

Multiple ARM Mbed OS, Version 6.3.0

Multiple ARM mbed-ualloc, Version 1.3.0

Multiple BlackBerry QNX SDP Versions 6.5.0 SP1 and earlier

Multiple BlackBerry QNX OS for Safety Versions 1.0.1 and earlier safety products compliant with IEC 61508 and/or ISO 26262

Multiple BlackBerry QNX OS for Medical Versions 1.1 and earlier safety products compliant with IEC 62304 A full list of affected QNX products and versions is available here

Multiple A full list of affected QNX products and versions is available here

Multiple Cesanta Software Mongoose OS, v2.17.0

Multiple eCosCentric eCosPro RTOS, Versions 2.0.1 through 4.5.3

Multiple Google Cloud IoT Device SDK, Version 1.0.2

Multiple Media Tek LinkIt SDK, versions prior to 4.6.1

Multiple Micrium OS, Versions 5.10.1 and prior

Multiple Micrium uC/OS: uC/LIB Versions 1.38.xx, Version 1.39.00

Multiple NXP MCUXpresso SDK, versions prior to 2.8.2

Multiple NXP MQX, Versions 5.1 and prior

Multiple Redhat newlib, versions prior to 4.0.0

Multiple RIOT OS, Version 2020.01.1

Multiple Samsung Tizen RT RTOS, versions prior 3.0.GBB

Multiple TencentOS-tiny, Version 3.1.0

Multiple Texas Instruments CC32XX, versions prior to 4.40.00.07

Multiple Texas Instruments SimpleLink MSP432E4XX

Multiple Texas Instruments SimpleLink-CC13XX, versions prior to 4.40.00

Multiple Texas Instruments SimpleLink-CC26XX, versions prior to 4.40.00

Multiple Texas Instruments SimpleLink-CC32XX, versions prior to 4.10.03

Multiple Uclibc-NG, versions prior to 1.0.36

Multiple Windriver VxWorks, prior to 7.0

Multiple Zephyr Project RTOS, versions prior to 2.5

Remediation

Information

Update NXP MCUXpresso SDK to 2.9.0 or later

Event History

May 3, 2022

CVE Published

via MITRE·08:24 PM

Data Sourced

via MITRE·08:24 PM

RemedyDescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

ICSA-21-119-04

Frequently Asked Questions

What is CVE-2021-27421?

CVE-2021-27421 is a vulnerability in NXP MCUXpresso SDK versions prior to 2.8.2 that allows an attacker to access memory locations outside the bounds of a specified array.

How severe is CVE-2021-27421?

CVE-2021-27421 has a severity rating of 9.8 out of 10, indicating a critical vulnerability.

Which software versions are affected by CVE-2021-27421?