Detections
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Amazon Linux 2 : systemd (ALAS-2019-1164)

medium Nessus Plugin ID 122261

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

It was found that bus_process_object() in bus-objects.c allocates a buffer on the stack large enough to temporarily store the object path specified in the incoming message. A malicious unprivileged local user to send a message which results in the stack pointer moving outside of the bounds of the currently mapped stack region, jumping over the stack guard pages. A specifically crafted DBUS nessage could crash PID 1 and result in a subsequent kernel panic.(CVE-2019-6454)

Solution

Run 'yum update systemd' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2019-1164.html

Plugin Details

Severity: Medium

ID: 122261

File Name: al2_ALAS-2019-1164.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2/19/2019

Updated: 2/12/2020

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libgudev1, p-cpe:/a:amazon:linux:libgudev1-devel, p-cpe:/a:amazon:linux:systemd, p-cpe:/a:amazon:linux:systemd-debuginfo, p-cpe:/a:amazon:linux:systemd-devel, p-cpe:/a:amazon:linux:systemd-journal-gateway, p-cpe:/a:amazon:linux:systemd-libs, p-cpe:/a:amazon:linux:systemd-networkd, p-cpe:/a:amazon:linux:systemd-python, p-cpe:/a:amazon:linux:systemd-resolved, p-cpe:/a:amazon:linux:systemd-sysv, cpe:/o:amazon:linux:2

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 2/18/2019

Vulnerability Publication Date: 3/21/2019

Reference Information

CVE: CVE-2019-6454

ALAS: 2019-1164