CVE-2021-27417: eCosCentric eCosPro RTOS Integer Overflow or Wraparound

Q: What is the severity of CVE-2021-27417?

CVE-2021-27417 has a high severity due to its potential for heap-based buffer overflow leading to arbitrary code execution.

Q: How do I fix CVE-2021-27417?

To mitigate CVE-2021-27417, update the affected software versions to the latest patches provided by the vendors.

Q: Which software is affected by CVE-2021-27417?

CVE-2021-27417 affects multiple RTOS products, including eCosCentric eCosPro, Amazon FreeRTOS, and ARM Mbed OS among others.

Q: What happens if CVE-2021-27417 is exploited?

Exploitation of CVE-2021-27417 can allow an attacker to execute arbitrary code on the affected system due to improper memory allocation.

Q: Is CVE-2021-27417 exploitability tested?

Yes, CVE-2021-27417 has been assessed and found to be relatively easy to exploit, increasing the urgency for remediation.

Published May 3, 2022

Updated

eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in function calloc (an implementation of malloc). The unverified memory assignment can lead to arbitrary memory allocation, resulting in a heap-based buffer overflow.

Affected Software

30 affected components

eCosCentric eCosPro>=2.0.1<=4.5.3

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 eCosCentric eCosPro RTOS to version 4.5.4 or newer – Update available

Event History

May 3, 2022

CVE Published

via MITRE·08:17 PM

Data Sourced

via MITRE·08:17 PM

RemedyDescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

ICSA-21-119-04

Frequently Asked Questions

What is the severity of CVE-2021-27417?

CVE-2021-27417 has a high severity due to its potential for heap-based buffer overflow leading to arbitrary code execution.

How do I fix CVE-2021-27417?

To mitigate CVE-2021-27417, update the affected software versions to the latest patches provided by the vendors.

Which software is affected by CVE-2021-27417?