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By the Year

In 2022 there have been 2 vulnerabilities in Bluez with an average score of 7.7 out of ten. Last year Bluez had 3 security vulnerabilities published. If vulnerabilities keep coming in at the current rate, it appears that number of security vulnerabilities in Bluez in 2022 could surpass last years number. However, the average CVE base score of the vulnerabilities in 2022 is greater by 1.35.

Year Vulnerabilities Average Score
2022 2 7.65
2021 3 6.30
2020 2 7.85
2019 1 3.30
2018 0 0.00

It may take a day or so for new Bluez vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.

Recent Bluez Security Vulnerabilities

A heap overflow vulnerability was found in bluez in versions prior to 5.63

CVE-2022-0204 8.8 - High - March 10, 2022

A heap overflow vulnerability was found in bluez in versions prior to 5.63. An attacker with local network access could pass specially crafted files causing an application to halt or crash, leading to a denial of service.

Memory Corruption

bluetoothd from bluez incorrectly saves adapters' Discoverable status when a device is powered down, and restores it when powered up

CVE-2021-3658 6.5 - Medium - March 02, 2022

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.

AuthZ

BlueZ is a Bluetooth protocol stack for Linux

CVE-2021-41229 6.5 - Medium - November 12, 2021

BlueZ is a Bluetooth protocol stack for Linux. In affected versions a vulnerability exists in sdp_cstate_alloc_buf which allocates memory which will always be hung in the singly linked list of cstates and will not be freed. This will cause a memory leak over time. The data can be a very large object, which can be caused by an attacker continuously sending sdp packets and this may cause the service of the target device to crash.

Memory Leak

An issue was discovered in gatt-database.c in BlueZ 5.61

CVE-2021-43400 9.1 - Critical - November 04, 2021

An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.

Dangling pointer

The cli_feat_read_cb() function in src/gatt-database.c does not perform bounds checks on the 'offset' variable before using it as an index into an array for reading.

CVE-2021-3588 3.3 - Low - June 10, 2021

The cli_feat_read_cb() function in src/gatt-database.c does not perform bounds checks on the 'offset' variable before using it as an index into an array for reading.

Out-of-bounds Read

In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c

CVE-2020-27153 8.6 - High - October 15, 2020

In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c. A remote attacker could potentially cause a denial of service or code execution, during service discovery, due to a redundant disconnect MGMT event.

Double-free

Improper access control in subsystem for BlueZ before version 5.54 may

CVE-2020-0556 7.1 - High - March 12, 2020

Improper access control in subsystem for BlueZ before version 5.54 may allow an unauthenticated user to potentially enable escalation of privilege and denial of service via adjacent access

A bug in Bluez may allow for the Bluetooth Discoverable state being set to on when no Bluetooth agent is registered with the system

CVE-2018-10910 3.3 - Low - January 28, 2019

A bug in Bluez may allow for the Bluetooth Discoverable state being set to on when no Bluetooth agent is registered with the system. This situation could lead to the unauthorized pairing of certain Bluetooth devices without any form of authentication. Versions before bluez 5.51 are vulnerable.

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