CVE-2021-3436

Public Exploit
BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known

Description

BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions >= 1.14.2, >= 2.4.0, >= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.32%
Third-Party Advisory github.com
Affected: zephyrproject-rtos zephyr
Published at:
Updated at:

References

Link Tags
http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63 exploit third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-3436?
CVE-2021-3436 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3436?
To fix CVE-2021-3436, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3436 being actively exploited in the wild?
It is possible that CVE-2021-3436 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3436?
CVE-2021-3436 affects zephyrproject-rtos zephyr.
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