CVE-2021-27419: uClibc-ng Integer Overflow or Wraparound
First published: Tue May 03 2022(Updated: )
uClibc-ng versions prior to 1.0.37 are vulnerable to integer wrap-around in functions malloc-simple. This improper memory assignment 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 |
|---|---|---|
| uClibc-ng | <1.0.37 | |
| 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
uClibc-ng update available.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-27419?
CVE-2021-27419 has a high severity rating due to its potential for arbitrary memory allocation and remote code execution.
How do I fix CVE-2021-27419?
To address CVE-2021-27419, upgrade to uClibc-ng version 1.0.37 or later.
What types of software are affected by CVE-2021-27419?
CVE-2021-27419 affects various software including Amazon FreeRTOS, Apache Nuttx OS, and multiple ARM OS versions.
What are the potential risks of CVE-2021-27419?
CVE-2021-27419 can lead to crashes, arbitrary code execution, and unexpected application behavior.
When was CVE-2021-27419 disclosed?
CVE-2021-27419 was disclosed in April 2021.
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