Alibaba Cloud Linux 3 : 0167: sssd (ALINUX3-SA-2025:0167)

high Nessus Plugin ID 275559

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 a vulnerability as referenced in the ALINUX3-SA-2025:0167 advisory.

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

CVE-2025-11561:
A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible. This fallback allows an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users, potentially resulting in unauthorized access or privilege escalation on domain-joined Linux hosts.

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

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 275559

File Name: alinux3_sa_2025-0167.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 11/17/2025

Updated: 11/17/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2025-11561

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/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:alibabacloud:alibaba_cloud_linux_3:sssd-proxy-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-krb5-common, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-dbus-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_nss_idmap-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-sss-murmur, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-tools-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_autofs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-common, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-dbus, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_idmap, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-ad, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-client-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-tools, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-sssdconfig, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-polkit-rules, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_nss_idmap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-libsss_nss_idmap, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-idp, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-winbind-idmap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libipa_hbac, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-common-pac, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_idmap-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-sss, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_certmap-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_sudo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-ldap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-proxy, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_certmap, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_simpleifp, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-sss-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-common-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-common-pac-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-libipa_hbac, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-kcm-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_idmap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-ldap, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_simpleifp-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-kcm, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-winbind-idmap, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-libipa_hbac-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-sss-murmur-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libipa_hbac-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-client, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_nss_idmap, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-krb5-common-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-ipa-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-ad-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libipa_hbac-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_certmap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_sudo-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-ipa, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_simpleifp-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-libsss_nss_idmap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-krb5-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-nfs-idmap, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-nfs-idmap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-idp-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libsss_autofs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:sssd-krb5

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/11/2025

Vulnerability Publication Date: 10/9/2025

Reference Information

CVE: CVE-2025-11561

Detections

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