PT-2020-6442 · Freertos · Freertos

Published 2020-12-07 · Updated 2021-06-02 · CVE-2021-31571

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions FreeRTOS versions prior to 10.4.3

Description The issue is caused by an integer overflow in the queue.c file of the FreeRTOS kernel, which can be exploited by a remote attacker to impact the confidentiality, integrity, and availability of protected information.

Recommendations For versions prior to 10.4.3, update to version 10.4.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the queue.c functionality until a patch is available.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

BDU:2021-04801

CVE-2021-31571

Affected Products

Freertos

References · 7

• https://github.com/FreeRTOS/FreeRTOS-Kernel/commit/47338393f1f79558f6144213409f09f81d7c4837 · Patch
• https://bdu.fstec.ru/vul/2021-04801 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-31571 · Security Note
• https://osv.dev/vulnerability/CVE-2021-31571 · Vendor Advisory
• https://us-cert.gov/ics/advisories/icsa-21-119-04 · Note
• https://t.me/cvenotify/13973 · Telegram Post
• https://t.me/cvenotify/13752 · Telegram Post