Terminal Services Doesn't Use Network Level Authentication (NLA) Only

medium Nessus Plugin ID 58453

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Synopsis

The remote Terminal Services doesn't use Network Level Authentication only.

Description

The remote Terminal Services is not configured to use Network Level Authentication (NLA) only. NLA uses the Credential Security Support Provider (CredSSP) protocol to perform strong server authentication either through TLS/SSL or Kerberos mechanisms, which protect against man-in-the-middle attacks. In addition to improving authentication, NLA also helps protect the remote computer from malicious users and software by completing user authentication before a full RDP connection is established.

Solution

Enable Network Level Authentication (NLA) on the remote RDP server. This is generally done on the 'Remote' tab of the 'System' settings on Windows.

Plugin Details

Severity: Medium

ID: 58453

File Name: rdp_credssp_detect.nbin

Version: 1.86

Type: remote

Family: Misc.

Published: 3/23/2012

Updated: 3/19/2024

Asset Inventory: true

Hardware Inventory: true

OS Identification: true

Supported Sensors: Nessus

Risk Information

CVSS Score Rationale: Based on analysis of security feature.

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

CVSS Score Source: manual

CVSS v3

Risk Factor: Medium

Base Score: 4

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

Vulnerability Information

CPE: cpe:/o:microsoft:windows, cpe:/a:microsoft:remote_desktop_protocol

Detections

Analytics