CVE-2021-27425: Cesanta Software Mongoose-OS Integer Overflow or Wraparound

Published May 3, 2022

Updated

Cesanta Software Mongoose-OS v2.17.0 is vulnerable to integer wrap-around in function mmmalloc. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

Affected Software

30 affected components

Cesanta Mongoose OS=2.17.0

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

Cesanta Software Mongoose update available

Event History

May 3, 2022

CVE Published

via MITRE·08:21 PM

Data Sourced

via MITRE·08:21 PM

RemedyDescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

ICSA-21-119-04

Frequently Asked Questions

What is CVE-2021-27425?

CVE-2021-27425 is a vulnerability in Cesanta Software Mongoose-OS v2.17.0 that allows for integer wrap-around in the function mm_malloc, leading to arbitrary memory allocation and potential remote code injection/execution.

How severe is CVE-2021-27425?

CVE-2021-27425 has a severity rating of 9.8, which is considered critical.

How can the CVE-2021-27425 vulnerability be exploited?

The CVE-2021-27425 vulnerability can be exploited by triggering the integer wrap-around in the mm_malloc function, allowing for arbitrary memory allocation and potential remote code injection or execution.

What software versions are affected by CVE-2021-27425?

CVE-2021-27425 affects Mongoose-OS version 2.17.0.

Are there any mitigations for CVE-2021-27425?

Currently, there are no known mitigations for CVE-2021-27425. It is recommended to update to a patched version of Mongoose-OS when available.