Ubuntu update for systemd

1) Input validation error

EUVDB-ID: #VU17752

Risk: Low

CVSSv3.1: 5.4 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6454

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local unauthenticated attacker to cause DoS condition on the target system.

The weakness exists due to incorrect handling of certain D-Bus messages. A local attacker can supply specially crafted D-Bus messages to crash the init process, resulting in a system denial-of-service (kernel panic).

Mitigation

Update the affected packages.

Ubuntu 18.10

libsystemd0 - 239-7ubuntu10.8

systemd - 239-7ubuntu10.8

Ubuntu 18.04 LTS

libsystemd0 - 237-3ubuntu10.13

systemd - 237-3ubuntu10.13

Ubuntu 16.04 LTS

libsystemd0 - 229-4ubuntu21.16

systemd - 229-4ubuntu21.16

Vulnerable software versions

systemd (Ubuntu package): 229-4ubuntu21.1 - 239-7ubuntu10.7

External links

http://usn.ubuntu.com/3891-1/

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.