Debian DSA-4647-1 : bluez - security update

high Nessus Plugin ID 134984
New! Plugin Severity Now Using CVSS v3

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Synopsis

The remote Debian host is missing a security-related update.

Description

It was reported that the BlueZ's HID and HOGP profile implementations don't specifically require bonding between the device and the host.
Malicious devices can take advantage of this flaw to connect to a target host and impersonate an existing HID device without security or to cause an SDP or GATT service discovery to take place which would allow HID reports to be injected to the input subsystem from a non-bonded source.

For the HID profile an new configuration option (ClassicBondedOnly) is introduced to make sure that input connections only come from bonded device connections. The options defaults to 'false' to maximize device compatibility.

Solution

Upgrade the bluez packages.

For the oldstable distribution (stretch), this problem has been fixed in version 5.43-2+deb9u2.

For the stable distribution (buster), this problem has been fixed in version 5.50-1.2~deb10u1.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953770

https://security-tracker.debian.org/tracker/source-package/bluez

https://packages.debian.org/source/stretch/bluez

https://packages.debian.org/source/buster/bluez

https://www.debian.org/security/2020/dsa-4647

Plugin Details

Severity: High

ID: 134984

File Name: debian_DSA-4647.nasl

Version: 1.3

Type: local

Agent: unix

Published: 3/30/2020

Updated: 4/28/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-0556

VPR

Risk Factor: Medium

Score: 4.9

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bluez, cpe:/o:debian:debian_linux:10.0, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 3/26/2020

Vulnerability Publication Date: 3/12/2020

Reference Information

CVE: CVE-2020-0556

DSA: 4647