Alibaba Cloud Linux 3 : 0218: systemd (ALINUX3-SA-2022:0218)

critical Nessus Plugin ID 236093

Synopsis

The remote Alibaba Cloud Linux host is missing one or more security updates.

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2022:0218 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2021-33910:
basic/unit-name.c in systemd prior to 246.15, 247.8, 248.5, and 249.1 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-2022-2526:
A use-after-free vulnerability was found in systemd. This issue occurs due to the on_stream_io() function and dns_stream_complete() function in 'resolved-dns-stream.c' not incrementing the reference counting for the DnsStream object. Therefore, other functions and callbacks called can dereference the DNSStream object, causing the use-after-free when the reference is still used later.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

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

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 236093

File Name: alinux3_sa_2022-0218.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

CVSS Score Source: CVE-2022-2526

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-udev-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-debugsource, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-journal-remote, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-journal-remote-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-pam-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-container-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-tests-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-pam, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-libs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-tests, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-udev, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:systemd-container

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/8/2022

Vulnerability Publication Date: 7/20/2021

Reference Information

CVE: CVE-2021-33910, CVE-2022-2526

Detections

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