Vulnerability · Published Oct 5, 2021 · Assigned by zephyr
CVE-2021-3436BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known
Medium 4.3
In plain English
A medium-severity security flaw in zephyr from zephyrproject-rtos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)1.0%top 37.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| zephyrproject-rtos | zephyr | 1.14.2 – before unspecified2.4.0 – before unspecified2.5.0 – before unspecified |
Weakness: CWE-694 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L