Vulnerability identifier: #VU83408

Vulnerability risk: Low

CVSSv3.1: 2.1 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3658

CWE-ID: CWE-863

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
BlueZ
Universal components / Libraries / Libraries used by multiple products

Vendor: BlueZ Project

Description

The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due to bluetoothd incorrectly saves the adapters' discoverable status when a device is powered down, and restores it when powered up. An attacker with physical proximity to device can gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BlueZ: 4.0 - 5.60

---

External links
http://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89
http://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055
http://bugzilla.redhat.com/show_bug.cgi?id=1984728
http://github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055
http://security.netapp.com/advisory/ntap-20220407-0002/

---

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.