Bluetooth Adapter Exposure in BlueZ by Bluez Project
CVE-2021-3658

6.5MEDIUM

Key Information:

Vendor

Bluez

Status
Bluez
Vendor
CVE Published:
2 March 2022

What is CVE-2021-3658?

The Bluetooth daemon in BlueZ has a flaw where it improperly saves the Discoverable status of Bluetooth adapters. When a device that is set to discoverable is powered down, it retains this discoverable status when powered up again. This presents a security risk, allowing nearby attackers the potential to detect and connect to the device without authorization, compromising the integrity of the Bluetooth stack.

Affected Version(s)

bluez Fixedin - 5.61 and above.

References

https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89
x_refsource_MISC
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit...
x_refsource_MISC
https://github.com/bluez/bluez/commit/b497b5942a8beb8f89c...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2021-3658 : Bluetooth Adapter Exposure in BlueZ by Bluez Project