Detections
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Alibaba Cloud Linux 3 : 0152: samba (ALINUX3-SA-2026:0152)
critical Nessus Plugin ID 321244
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-2026:0152 advisory.Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:
CVE-2026-3012:
A flaw was found in Sambas certificate auto-enrollment Group Policy handling. When certificate auto- enrollment is enabled, Samba may retrieve a CA certificate over an unencrypted HTTP connection and install it into the local trust store without proper verification. An attacker with the ability to intercept or redirect network traffic could exploit this behavior to supply a malicious certificate authority certificate, potentially allowing interception or spoofing of trusted communications.
CVE-2026-4408:
A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use the check password script feature. If this script is configured with the %u substitution character, the client-controlled username is passed without proper escaping of shell meta-characters. This vulnerability allows an attacker to achieve remote command execution on the affected system. This issue primarily affects non-standard configurations where the check password script is used with %u and the samba-dcerpcd service is started as a system service.
CVE-2026-4480:
A flaw was found in the Samba printing subsystem. Samba passes the client-controlled job description string to the command configured with the print command setting via the %J substitution character without escaping shell meta characters. A remote attacker could exploit this vulnerability by sending a specially crafted print job description that contains unescaped shell characters. This could lead to remote code execution on the affected system.
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-20260152.xml
Plugin Details
Severity: Critical
ID: 321244
File Name: alinux3_sa_2026-0152.nasl
Version: 1.1
Type: Local
Published: 6/16/2026
Updated: 6/16/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-4480
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
Vulnerability Information
CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-vfs-iouring, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-samba-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsmbclient, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-test, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-winbind-modules, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-dcerpc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-pidl, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-ldb-ldap-modules, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-samba, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-krb5-printing, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-tools, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-usershares, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libnetapi-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-client-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-winbind-clients, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libwbclient-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-winbind, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-dc-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-common-tools, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-test-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-winexe, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libwbclient, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-samba-dc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-samba-test, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-winbind-krb5-locator, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-common-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsmbclient-devel, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-client, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ctdb, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:samba-common, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libnetapi
Required KB Items: Host/local_checks_enabled, Host/Alibaba/release, Host/Alibaba/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 6/11/2026
Vulnerability Publication Date: 5/26/2026