CVE-2021-27504: Texas Instruments FREERTOS Integer Overflow or Wraparound

Q: What is CVE-2021-27504?

CVE-2021-27504 is an integer overflow vulnerability in 'malloc' for FreeRTOS, which can lead to code execution.

Q: What is the severity of CVE-2021-27504?

CVE-2021-27504 has a severity value of 7.4, which is considered high.

Q: Which software are affected by CVE-2021-27504?

CVE-2021-27504 affects Amazon FreeRTOS, Ti Simplelink CC13xx Software Development Kit, Ti Simplelink CC26xx Software Development Kit, Ti Simplelink CC32xx Software Development Kit, Ti Simplelink Msp432e401y, and Ti Simplelink Msp432e411y.

Q: How can the vulnerability be exploited?

The vulnerability can be exploited by providing an extremely large value to 'malloc', which triggers an integer overflow in FreeRTOS and can lead to code execution.

Q: How can I fix CVE-2021-27504?

To fix CVE-2021-27504, it is recommended to update to the latest version of the affected software provided by the respective vendors.

Published Nov 21, 2023

Updated

Texas Instruments devices running FREERTOS, malloc returns a valid pointer to a small buffer on extremely large values, which can trigger an integer overflow vulnerability in 'malloc' for FreeRTOS, resulting in code execution.

Affected Software

35 affected components

Amazon FreeRTOS=10.4.1

ti Simplelink Cc13xx Software Development Kit<4.40.00

ti Simplelink Cc26xx Software Development Kit<4.40.00

ti Simplelink Cc32xx Software Development Kit<4.10.03

ti Simplelink Msp432e401y

ti Simplelink Msp432e411y

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

Texas Instruments CC32XX – Update to v4.40.00.07 Texas Instruments SimpleLink CC13X0 – Update to v4.10.03 https://www.ti.com/technologies/security/report-product-security-vulnerabilities.html Texas Instruments SimpleLink CC13X2-CC26X2 – Update to v4.40.00 https://www.ti.com/technologies/security/report-product-security-vulnerabilities.html Texas Instruments SimpleLink CC2640R2 – Update to v4.40.00 https://www.ti.com/technologies/security/report-product-security-vulnerabilities.html Texas Instruments SimpleLink MSP432E4 – Confirmed. No update currently planned

Event History

Nov 21, 2023

CVE Published

05:43 PM

Data Sourced

05:43 PM

RemedyDescriptionSeverityWeakness

May 9, 2024

Data Sourced

via ICS·10:29 PM

SeverityWeaknessAffected Software

Frequently Asked Questions

What is CVE-2021-27504?

CVE-2021-27504 is an integer overflow vulnerability in 'malloc' for FreeRTOS, which can lead to code execution.

What is the severity of CVE-2021-27504?

CVE-2021-27504 has a severity value of 7.4, which is considered high.

Which software are affected by CVE-2021-27504?