Vulnerability Details : CVE-2021-3966
usb device bluetooth class includes a buffer overflow related to implementation of net_buf_add_mem.
Vulnerability category: Overflow
Products affected by CVE-2021-3966
- cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3966
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3966
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.8
|
HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST | |
|
9.6
|
CRITICAL | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H |
2.8
|
6.0
|
Zephyr Project |
CWE ids for CVE-2021-3966
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: nvd@nist.gov (Primary)
-
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Assigned by: vulnerabilities@zephyrproject.org (Secondary)
References for CVE-2021-3966
-
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hfxq-3w6x-fv2m
Usb bluetooth device ACL read cb buffer overflow · Advisory · zephyrproject-rtos/zephyr · GitHubThird Party Advisory
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