CVE-2021-3329: DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer
First published: Sun Feb 26 2023(Updated: )
Lack of proper validation in HCI Host stack initialization can cause a crash of the bluetooth stack
Credit: vulnerabilities@zephyrproject.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zephyrproject Zephyr | =2.4.0 | |
| Zephyrproject Zephyr | =2.4.0-rc1 | |
| Zephyrproject Zephyr | =2.4.0-rc2 | |
| Zephyrproject Zephyr | =2.4.0-rc3 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2021-3329?
CVE-2021-3329 is a vulnerability in the HCI Host stack initialization of the Bluetooth stack in Zephyr Project Zephyr 2.4.0 and earlier.
What is the severity of CVE-2021-3329?
The severity of CVE-2021-3329 is critical with a severity value of 6.5.
How does CVE-2021-3329 affect Zephyr Project Zephyr?
CVE-2021-3329 affects Zephyr Project Zephyr 2.4.0 and earlier versions.
How can CVE-2021-3329 be exploited?
CVE-2021-3329 can be exploited by causing a crash of the Bluetooth stack through lack of proper validation in HCI Host stack initialization.
Is there a fix available for CVE-2021-3329?
Yes, a fix for CVE-2021-3329 is available. It is recommended to update to Zephyr Project Zephyr version 2.4.1 or later.
- collector/nvd-index
- agent/weakness
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/author
- agent/references
- agent/severity
- agent/title
- agent/tags
- agent/description
- agent/first-publish-date
- agent/event
- vendor/zephyrproject
- canonical/zephyrproject zephyr
- version/zephyrproject zephyr/2.4.0
- version/zephyrproject zephyr/2.4.0-rc1
- version/zephyrproject zephyr/2.4.0-rc2
- version/zephyrproject zephyr/2.4.0-rc3