Detections
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Alibaba Cloud Linux 3 : 0039: systemd (ALINUX3-SA-2022:0039)
high Nessus Plugin ID 236564
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-2022:0039 advisory.Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:
CVE-2019-3842:
In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the allow_active element rather than allow_any.
CVE-2020-13776:
systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082.
CVE-2020-1712:
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.
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.See Also
http://mirrors.aliyun.com/alinux/3/cve/alinux3-sa-20220039.xml
Plugin Details
Severity: High
ID: 236564
File Name: alinux3_sa_2022-0039.nasl
Version: 1.1
Type: local
Published: 5/14/2025
Updated: 5/14/2025
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.2
Temporal Score: 4.9
Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2020-13776
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7
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:P/RL:O/RC:C
CVSS Score Source: CVE-2020-1712
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: 6/28/2021
Vulnerability Publication Date: 4/9/2019