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EulerOS 2.0 SP11 : openssh (EulerOS-SA-2025-1367)

medium Nessus Plugin ID 234151

Synopsis

The remote EulerOS host is missing a security update.

Description

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

 A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.(CVE-2025-26465)

Tenable has extracted the preceding description block directly from the EulerOS openssh 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 openssh packages.

See Also

http://www.nessus.org/u?a4e33d17

Plugin Details

Severity: Medium

ID: 234151

File Name: EulerOS_SA-2025-1367.nasl

Version: 1.1

Type: local

Published: 4/11/2025

Updated: 4/11/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.6

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

CVSS Score Source: CVE-2025-26465

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 6.1

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:openssh-server, p-cpe:/a:huawei:euleros:openssh, cpe:/o:huawei:euleros:2.0, p-cpe:/a:huawei:euleros:openssh-clients

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

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/9/2025

Vulnerability Publication Date: 2/11/2025

Reference Information

CVE: CVE-2025-26465

IAVA: 2025-A-0126