Alibaba Cloud Linux 3 : 0198: openssh (ALINUX3-SA-2025:0198)

low Nessus Plugin ID 280121

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-2025:0198 advisory.

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

CVE-2025-61984:
ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used. The untrusted sources are the command line and %-sequence expansion of a configuration file. (A configuration file that provides a complete literal username is not categorized as an untrusted source.)

CVE-2025-61985:
ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used.

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: Low

ID: 280121

File Name: alinux3_sa_2025-0198.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 12/29/2025

Updated: 12/29/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.0

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2025-61985

CVSS v3

Risk Factor: Low

Base Score: 3.6

Temporal Score: 3.3

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

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

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-keycat-debuginfo, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pam_ssh_agent_auth-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-ldap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-server, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-cavs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-clients-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-keycat, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pam_ssh_agent_auth, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-server-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-cavs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-askpass, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-clients, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-ldap, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-askpass-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:openssh-debuginfo

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: 12/26/2025

Vulnerability Publication Date: 10/6/2025

Reference Information

CVE: CVE-2025-61984, CVE-2025-61985

Detections

Analytics