Ubuntu update for BlueZ

Published: 2020-03-31

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-0556 CVE-2016-7837
CWE-ID	CWE-264 CWE-94
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	bluez (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU26047

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0556

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to improper access control in subsystem for BlueZ. A remote attacker on the local network can gain elevated privileges on the target system and cause a denial of service (DoS) condition.

Mitigation

Update the affected packages.

Ubuntu 19.10: bluez - 5.50-0ubuntu5.1; libbluetooth3 - 5.50-0ubuntu5.1
Ubuntu 18.04 LTS: bluez - 5.48-0ubuntu3.4; libbluetooth3 - 5.48-0ubuntu3.4
Ubuntu 16.04 LTS: bluez - 5.37-0ubuntu5.3; libbluetooth3 - 5.37-0ubuntu5.3

Vulnerable software versions

bluez (Ubuntu package): 5.37-0ubuntu5.1 - 5.48-0ubuntu3.3

External links

http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00352.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Code Injection

EUVDB-ID: #VU23108

Risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7837

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')