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gentooGentoo FoundationGLSA-202003-49
HistoryMar 25, 2020 - 12:00 a.m.

BlueZ: Security bypass

2020-03-2500:00:00
Gentoo Foundation
security.gentoo.org
30

7.1 High

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

5.8 Medium

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:A/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

41.5%

Background

Set of tools to manage Bluetooth devices for Linux.

Description

It was discovered that the HID and HOGP profiles implementations in BlueZ did not specifically require bonding between the device and the host.

Impact

A remote attacker with adjacent access could impersonate an existing HID device, cause a Denial of Service condition or escalate privileges.

Workaround

There is no known workaround at this time.

Resolution

All BlueZ users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-wireless/bluez-5.54"
OSVersionArchitecturePackageVersionFilename
Gentooanyallnet-wireless/bluez< 5.54UNKNOWN

7.1 High

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

5.8 Medium

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:A/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

41.5%