Vulnerability CVE-2021-3658
Published: 2022-03-02   Modified: 2022-03-03

Description:
bluetoothd from bluez incorrectly saves adapters' Discoverable status when a device is powered down, and restores it when powered up. If a device is powered down while discoverable, it will be discoverable when powered on again. This could lead to inadvertent exposure of the bluetooth stack to physically nearby attackers.

Type:

CWE-863

 (Incorrect Authorization)

CVSS2 => (AV:A/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.3/10
2.9/10
6.5/10
Exploit range
Attack complexity
Authentication
Adjacent network
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Fedoraproject -> Fedora 
Bluez -> Bluez 

 References:
https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055
https://bugzilla.redhat.com/show_bug.cgi?id=1984728
https://github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055
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