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Debian DLA-3063-1 : systemd - LTS security update

high Nessus Plugin ID 162623

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Synopsis

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

Description

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-3063 advisory.

 - A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages. (CVE-2020-1712)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the systemd packages.

For Debian 9 stretch, this problem has been fixed in version 232-25+deb9u14.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=950732

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

https://www.debian.org/lts/security/2022/dla-3063

https://security-tracker.debian.org/tracker/CVE-2020-1712

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

Plugin Details

Severity: High

ID: 162623

File Name: debian_DLA-3063.nasl

Version: 1.2

Type: local

Agent: unix

Published: 6/30/2022

Updated: 6/30/2022

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2020-1712

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libnss-myhostname, p-cpe:/a:debian:debian_linux:libnss-mymachines, p-cpe:/a:debian:debian_linux:libnss-resolve, p-cpe:/a:debian:debian_linux:libnss-systemd, p-cpe:/a:debian:debian_linux:libpam-systemd, p-cpe:/a:debian:debian_linux:libsystemd-dev, p-cpe:/a:debian:debian_linux:libsystemd0, p-cpe:/a:debian:debian_linux:libudev-dev, p-cpe:/a:debian:debian_linux:libudev1, p-cpe:/a:debian:debian_linux:systemd, p-cpe:/a:debian:debian_linux:systemd-container, p-cpe:/a:debian:debian_linux:systemd-coredump, p-cpe:/a:debian:debian_linux:systemd-journal-remote, p-cpe:/a:debian:debian_linux:systemd-sysv, p-cpe:/a:debian:debian_linux:udev, 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: 6/30/2022

Vulnerability Publication Date: 2/3/2020

Reference Information

CVE: CVE-2020-1712