critical
9.8
CWE
190
Advisory Published
Updated

CVE-2020-35198: Integer Overflow

First published: Wed May 12 2021(Updated: )

An issue was discovered in Wind River VxWorks 7. The memory allocator has a possible integer overflow in calculating a memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Windriver Vxworks>=6.9<6.9.4.12
Windriver Vxworks>=7.0<21.03
Windriver Vxworks=6.9.4.12
Windriver Vxworks=6.9.4.12-rolling_cumulative_patch_layer1
Windriver Vxworks=6.9.4.12-rolling_cumulative_patch_layer2
Oracle Communications Eagle>=46.8.0<=46.8.2
Oracle Communications Eagle>=46.9.1<=46.9.3
Oracle Communications Eagle=46.7.0
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://www.oracle.com/security-alerts/cpuapr2022.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-35198?

    CVE-2020-35198 is a vulnerability in Wind River VxWorks 7 that could allow an attacker to cause memory corruption.

  • What is the severity of CVE-2020-35198?

    The severity of CVE-2020-35198 is critical, with a CVSS score of 9.8.

  • How does CVE-2020-35198 affect Wind River VxWorks?

    CVE-2020-35198 affects Wind River VxWorks 7 versions 6.9 to 6.9.4.12 and 7.0 to 21.03.

  • How can an attacker exploit CVE-2020-35198?

    An attacker can exploit CVE-2020-35198 by crafting a malicious input that triggers an integer overflow in the memory allocator, leading to memory corruption.

  • Is there a fix available for CVE-2020-35198?

    Yes, Wind River has released patches to address CVE-2020-35198. It is recommended to update to the latest version of VxWorks 7 as soon as possible.

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