CVE-2021-27419: uClibc-ng Integer Overflow or Wraparound
Published May 3, 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.
Affected Software
30 affected components
Uclibc-ng Project Uclibc-ng<1.0.37
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
uClibc-ng update available.
Event History
May 3, 2022
CVE Published
via MITRE·08:20 PM
Data Sourced
via MITRE·08:20 PM
RemedyDescriptionSeverityWeakness
Frequently Asked Questions
1
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.
2
How do I fix CVE-2021-27419?
To address CVE-2021-27419, upgrade to uClibc-ng version 1.0.37 or later.
3
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.
4
What are the potential risks of CVE-2021-27419?
CVE-2021-27419 can lead to crashes, arbitrary code execution, and unexpected application behavior.
5
When was CVE-2021-27419 disclosed?
CVE-2021-27419 was disclosed in April 2021.