CVE-2021-27427: RIOT OS Integer Overflow or Wraparound
First published: Tue May 03 2022(Updated: )
RIOT OS version 2020.01.1 is vulnerable to integer wrap-around in its implementation of calloc function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
Credit: ics-cert@hq.dhs.gov
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Riot OS | =2020.01.1 | |
| Amazon FreeRTOS | ||
| Apache NuttX | ||
| ARM CMSIS-RTOS2 | ||
| Arm Mbed OS | ||
| Arm Mbed ualloc | ||
| QNX | ||
| BlackBerry QNX OS for Safety | ||
| BlackBerry QNX OS for Medical | ||
| QNX | ||
| Mongoose OS | ||
| eCosCentric eCosPro RTOS | ||
| Google Cloud IoT Device SDK | ||
| MediaTek LinkIt SDK | ||
| Micrium OS | ||
| Micrium uC/OS | ||
| NXP MCUXpresso SDK | ||
| NXP MQX | ||
| newlib | ||
| RIOT OS | ||
| Samsung Tizen RT | ||
| TencentOS-tiny | ||
| Texas Instruments SimpleLink CC32XX | ||
| Texas Instruments SimpleLink MSP432E4 SDK | ||
| Texas Instruments SimpleLink CC13X2 SDK | ||
| Texas Instruments SimpleLink CC26XX | ||
| Texas Instruments SimpleLink CC32XX | ||
| uClibc | ||
| Wind River VxWorks | ||
| Zephyr Project RTOS |
Remedy
RIOT OS update available.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-27427?
The severity of CVE-2021-27427 is significant due to its potential to lead to arbitrary memory allocation, crashes, or remote code execution.
How do I fix CVE-2021-27427?
To fix CVE-2021-27427, update RIOT OS to a version after 2020.01.1 that addresses this integer wrap-around vulnerability.
What systems are affected by CVE-2021-27427?
CVE-2021-27427 affects RIOT OS version 2020.01.1 and various other platforms including Amazon FreeRTOS and BlackBerry QNX OS.
What type of vulnerability is CVE-2021-27427?
CVE-2021-27427 is an integer wrap-around vulnerability related to the implementation of the calloc function.
Can CVE-2021-27427 be exploited remotely?
Yes, CVE-2021-27427 can potentially be exploited remotely, leading to memory allocation issues and unauthorized code execution.
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