Detections
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Oracle Linux 8 : openssh (ELSA-2025-16823)

medium Nessus Plugin ID 265963

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Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-16823 advisory.

 [8.0p1-26.0.1]
 - Update upstream references [Orabug: 36587718]

 [8.0p1-26]
 - Fix missing invalid error code checks in OpenSSH. It prevents a MITM attack when VerifyHostKeyDNS is on (CVE-2025-26465) Resolves: RHEL-109228

Tenable has extracted the preceding description block directly from the Oracle 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.

See Also

https://linux.oracle.com/errata/ELSA-2025-16823.html

Plugin Details

Severity: Medium

ID: 265963

File Name: oraclelinux_ELSA-2025-16823.nasl

Version: 1.1

Type: local

Agent: unix

Published: 9/26/2025

Updated: 9/26/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

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:oracle:linux:openssh, cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:openssh-askpass, p-cpe:/a:oracle:linux:openssh-clients, p-cpe:/a:oracle:linux:openssh-server, p-cpe:/a:oracle:linux:openssh-keycat, p-cpe:/a:oracle:linux:openssh-ldap, p-cpe:/a:oracle:linux:pam_ssh_agent_auth, p-cpe:/a:oracle:linux:openssh-cavs, cpe:/o:oracle:linux:8:10:baseos_patch

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/26/2025

Vulnerability Publication Date: 2/11/2025

Reference Information

CVE: CVE-2025-26465

IAVA: 2025-A-0126-S