Medium severity · published Mar 2, 2022
CVE-2021-3658
bluetoothd from bluez incorrectly saves adapters' Discoverable status when a device is powered down, and restores it when powered up
6.5
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BL
Bluez · Bluez
before 5.61 · source: NVD
FE
Fedora · Fedoraproject
34 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3658
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3658
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1984728
Patch
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055
Patch
https://github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055
Issue Tracking
https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220407-0002/
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html
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