What is CVE-2021-27502?

CVE-2021-27502 is a vulnerability in Texas Instruments TI-RTOS that can be exploited through an integer overflow or wraparound.

How does Texas Instruments TI-RTOS Integer Overflow or Wraparound vulnerability affect the software?

The vulnerability affects Texas Instruments TI-RTOS when configured to use the HeapMem heap, causing an integer overflow in 'HeapMem_allocUnprotected' function and potentially allowing for code execution.

What is the severity of CVE-2021-27502?

The severity of CVE-2021-27502 is high with a CVSS score of 7.4.

Which software versions are affected by Texas Instruments TI-RTOS Integer Overflow or Wraparound vulnerability?

The affected software versions include Ti Real-time Operating System, Ti Simplelink Cc13xx Software Development Kit (up to version 4.40.00), Ti Simplelink Cc26xx Software Development Kit (up to version 4.40.00), Ti Simplelink Cc32xx Software Development Kit (up to version 4.10.03), Ti Simplelink Msp432e401y, and Ti Simplelink Msp432e411y.

Vulnerability/
CVE-2021-27502

high

7.8

CWE

190

21/11/2023

3/8/2024

CVE-2021-27502: Texas Instruments TI-RTOS Integer Overflow or Wraparound

Q: How do I mitigate the Texas Instruments TI-RTOS Integer Overflow or Wraparound vulnerability?

To mitigate the vulnerability, it is recommended to apply the necessary updates or patches provided by Texas Instruments and follow their security advisories.

First published: Tue Nov 21 2023(Updated: )

Texas Instruments TI-RTOS, when configured to use HeapMem heap(default), malloc returns a valid pointer to a small buffer on extremely large values, which can trigger an integer overflow vulnerability in 'HeapMem_allocUnprotected' and result in code execution.

Credit: ics-cert@hq.dhs.gov

Affected Software	Affected Version	How to fix
All of
Ti Real-time Operating System
Any of
Ti Cc3200
Ti Cc3220r
Ti Cc3220s
Ti Cc3220sf
Ti Cc3230s
Ti Cc3230sf
Ti Cc3235s
Ti Cc3235sf
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

Remedy

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

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

ICSA-21-119-04

Frequently Asked Questions

What is CVE-2021-27502?
CVE-2021-27502 is a vulnerability in Texas Instruments TI-RTOS that can be exploited through an integer overflow or wraparound.
How does Texas Instruments TI-RTOS Integer Overflow or Wraparound vulnerability affect the software?
The vulnerability affects Texas Instruments TI-RTOS when configured to use the HeapMem heap, causing an integer overflow in 'HeapMem_allocUnprotected' function and potentially allowing for code execution.
What is the severity of CVE-2021-27502?
The severity of CVE-2021-27502 is high with a CVSS score of 7.4.
Which software versions are affected by Texas Instruments TI-RTOS Integer Overflow or Wraparound vulnerability?
The affected software versions include Ti Real-time Operating System, Ti Simplelink Cc13xx Software Development Kit (up to version 4.40.00), Ti Simplelink Cc26xx Software Development Kit (up to version 4.40.00), Ti Simplelink Cc32xx Software Development Kit (up to version 4.10.03), Ti Simplelink Msp432e401y, and Ti Simplelink Msp432e411y.
How do I mitigate the Texas Instruments TI-RTOS Integer Overflow or Wraparound vulnerability?
To mitigate the vulnerability, it is recommended to apply the necessary updates or patches provided by Texas Instruments and follow their security advisories.