critical
9.8
CWE
120 190 119
Advisory Published
CVE Published
Updated

CVE-2021-3420: Integer Overflow

First published: Tue Mar 02 2021(Updated: )

A flaw was found in newlib in versions prior to 4.0.0. Improper overflow validation in the memory allocation functions mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc could case an integer overflow, leading to an allocation of a small buffer and then to a heap-based buffer overflow.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/newlib<4.0.0
4.0.0
Newlib Project Newlib<4.0.0
Fedoraproject Fedora=32
Fedoraproject Fedora=33
Fedoraproject Fedora=34
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

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=1934088

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