CVE-2021-3658
MEDIUMCVSS 6.5/10EPSS 0.78%
Last modified
CVE-2021-3658 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.78% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bluez | Bluez | < 5.61 |
| Fedoraproject | Fedora | 34 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1984728Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055Patch, Third Party Advisory
- https://github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055Patch, Third Party Advisory
- https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89Issue Tracking, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220407-0002/Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1984728Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055Patch, Third Party Advisory
- https://github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055Patch, Third Party Advisory
- https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89Issue Tracking, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220407-0002/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3658?
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.
How severe is CVE-2021-3658?
CVE-2021-3658 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3658?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
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