CVE-2021-3658
First published: Thu Jul 22 2021(Updated: )
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 proximate attackers.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| BlueZ BlueZ | <5.61 | |
| Fedoraproject Fedora | =34 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2018-10910
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1606203
- https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1986232
- https://bugzilla.redhat.com/show_bug.cgi?id=1984728
- https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055
- https://github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055
- https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89
- https://security.netapp.com/advisory/ntap-20220407-0002/
Frequently Asked Questions
What is CVE-2021-3658?
CVE-2021-3658 is a vulnerability in bluetoothd from bluez that incorrectly saves adapters' Discoverable status when a device is powered down and restores it when powered up, potentially exposing the bluetooth stack to physical attacks.
What is the severity of CVE-2021-3658?
The severity of CVE-2021-3658 is medium with a CVSS score of 6.5.
Which software is affected by CVE-2021-3658?
BlueZ versions up to 5.61 and Fedora 34 are affected by CVE-2021-3658.
How can CVE-2021-3658 be fixed?
To fix CVE-2021-3658, users should update their BlueZ software to a version beyond 5.61 or update Fedora to a version beyond 34, once patches are available.
Where can I find more information about CVE-2021-3658?
More information about CVE-2021-3658 can be found in the following references: [https://access.redhat.com/security/cve/CVE-2018-10910](https://access.redhat.com/security/cve/CVE-2018-10910), [https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1606203](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1606203), [https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8](https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8).
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- collector/mitre-cve
- source/MITRE
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- source/Red Hat
- alias/CVE-2021-3658
- agent/author
- agent/severity
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- agent/references
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- vendor/bluez
- canonical/bluez bluez
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/34