Ubuntu update for systemd

Published: 2019-09-04

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2019-15718
CWE-ID	CWE-276
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	systemd (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Incorrect default permissions

EUVDB-ID: #VU20837

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-15718

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a local user to change DNS settings.

The vulnerability exists due to the systemd-resolved D-Bus interface does not enforce appropriate access controls. A local unprivileged user can modify DNS resolver settings.

Mitigation

Update the affected packages.

Ubuntu 19.04: systemd - 240-6ubuntu5.6
Ubuntu 18.04 LTS: systemd - 237-3ubuntu10.28

Vulnerable software versions

systemd (Ubuntu package): 237-3ubuntu10.1 - 240-6ubuntu5.4

External links

http://usn.ubuntu.com/4120-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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