Vulnerability Details : CVE-2021-32020
The kernel in Amazon Web Services FreeRTOS before 10.4.3 has insufficient bounds checking during management of heap memory.
Vulnerability category: Overflow
Exploit prediction scoring system (EPSS) score for CVE-2021-32020
Probability of exploitation activity in the next 30 days: 0.22%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 61 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-32020
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-32020
-
The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-32020
-
https://github.com/FreeRTOS/FreeRTOS-Kernel/commit/c7a9a01c94987082b223d3e59969ede64363da63
Improve heap2 bounds checking (#224) · FreeRTOS/FreeRTOS-Kernel@c7a9a01 · GitHubPatch;Third Party Advisory
Products affected by CVE-2021-32020
- cpe:2.3:o:amazon:freertos:*:*:*:*:*:*:*:*