9.8
CRITICAL
CVE-2021-32020
Amazon Web Services FreeRTOS Heap Buffer Overflow
Description

The kernel in Amazon Web Services FreeRTOS before 10.4.3 has insufficient bounds checking during management of heap memory.

INFO

Published Date :

May 3, 2021, 10:15 p.m.

Last Modified :

May 12, 2021, 1:23 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-32020 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Amazon freertos
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-32020.

URL Resource
https://github.com/FreeRTOS/FreeRTOS-Kernel/commit/c7a9a01c94987082b223d3e59969ede64363da63 Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-32020 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-32020 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    May. 12, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/FreeRTOS/FreeRTOS-Kernel/commit/c7a9a01c94987082b223d3e59969ede64363da63 No Types Assigned https://github.com/FreeRTOS/FreeRTOS-Kernel/commit/c7a9a01c94987082b223d3e59969ede64363da63 Patch, Third Party Advisory
    Added CWE NIST CWE-119
    Added CPE Configuration OR *cpe:2.3:o:amazon:freertos:*:*:*:*:*:*:*:* versions up to (excluding) 10.4.3
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.22 }} 0.02%

score

0.60505

percentile

CVSS31 - Vulnerability Scoring System
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