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Debian DSA-4942-1 : systemd - security update

medium Nessus Plugin ID 151833

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Synopsis

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

Description

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dsa-4942 advisory.

 - basic/unit-name.c in systemd 220 through 248 has a Memory Allocation with an Excessive Size Value (involving strdupa and alloca for a pathname controlled by a local attacker) that results in an operating system crash. (CVE-2021-33910)

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 the stable distribution (buster), this problem has been fixed in version 241-7~deb10u8.

See Also

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

https://www.debian.org/security/2021/dsa-4942

https://security-tracker.debian.org/tracker/CVE-2021-33910

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

Plugin Details

Severity: Medium

ID: 151833

File Name: debian_DSA-4942.nasl

Version: 1.4

Type: local

Agent: unix

Published: 7/20/2021

Updated: 1/20/2022

Supported Sensors: 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: 3.8

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

CVSS Score Source: CVE-2021-33910

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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:P/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:systemd-tests, p-cpe:/a:debian:debian_linux:udev, cpe:/o:debian:debian_linux:10.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/20/2021

Vulnerability Publication Date: 7/20/2021

Reference Information

CVE: CVE-2021-33910

IAVA: 2021-A-0350