Authenticated (credentialed) vulnerability scanning uses valid system credentials to log into target hosts and perform deep inspection of installed software, patches, configurations, and security sett. Use when working with performing authenticated vulnerability scan.
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name
performing-authenticated-vulnerability-scan
description
Authenticated (credentialed) vulnerability scanning uses valid system credentials to log into target hosts and perform deep inspection of installed software, patches, configurations, and security sett. Use when working with performing authenticated vulnerability scan.
Authenticated (credentialed) vulnerability scanning uses valid system credentials to log into target hosts and perform deep inspection of installed software, patches, configurations, and security settings. Compared to unauthenticated scanning, credentialed scans detect 45-60% more vulnerabilities with significantly fewer false positives because they can directly query installed packages, registry keys, and file system contents.
Anti-Rationalization Table
Rationalization
Reality
"I'll figure it out as I go"
A structured approach saves time and reduces errors. Follow the workflow in this skill rather than improvising.
"I already know this topic"
Familiarity breeds shortcuts. Use the checklist to verify you haven't missed critical steps.
"This doesn't apply to my situation"
The patterns here generalize across contexts. Adapt, don't skip — the underlying principles hold.
"One more tool will fix it"
Adding complexity rarely solves process gaps. Master the core workflow first.
When to Use
Trigger phrases:
"performing authenticated vulnerability scan"
"Authenticated (credentialed) vulnerability scanning uses valid system credential"
When conducting security assessments that involve performing authenticated vulnerability scan
When following incident response procedures for related security events
When performing scheduled security testing or auditing activities
When validating security controls through hands-on testing
SSH Username/Password: Fallback for systems without key-based auth
Sudo/Su Elevation: Non-root user with sudo privileges
Certificate-based SSH: X.509 certificates for enterprise environments
Windows Systems
SMB (Windows): Domain or local admin credentials
WMI: Windows Management Instrumentation queries
WinRM: Windows Remote Management (HTTPS preferred)
Kerberos: Domain authentication with service tickets
Network Devices
SNMP v3: USM with authentication and privacy (AES-256)
SSH: For Cisco IOS, Juniper JunOS, Palo Alto PAN-OS
API Tokens: REST API for modern network platforms
Databases
Oracle: SYS/SYSDBA credentials or TNS connection
Microsoft SQL Server: Windows auth or SQL auth
PostgreSQL: Role-based authentication
MySQL: User/password with SELECT privileges
Workflow
Scope the task — define objectives, boundaries, and success criteria
Gather information — collect all necessary data and context before proceeding
Execute the core workflow — follow the domain-specific steps methodically
Validate results — verify outputs against expected outcomes or baselines
Document findings — record results, anomalies, and recommendations
Step 1: Create Dedicated Service Accounts
# Linux: Create scan service accountsudo useradd -m -s /bin/bash -c "Vulnerability Scanner Service Account" nessus_svc
sudo usermod -aG sudo nessus_svc
# Configure sudo for passwordless specific commandsecho'nessus_svc ALL=(ALL) NOPASSWD: /usr/bin/dpkg -l, /usr/bin/rpm -qa, \
/bin/cat /etc/shadow, /usr/sbin/dmidecode, /usr/bin/find' | sudotee /etc/sudoers.d/nessus_svc
# Generate SSH key pairsudo -u nessus_svc ssh-keygen -t ed25519 -f /home/nessus_svc/.ssh/id_ed25519 -N ""# Distribute public key to targetsfor host in $(cat target_hosts.txt); do
ssh-copy-id -i /home/nessus_svc/.ssh/id_ed25519.pub nessus_svc@$hostdone
# Windows: Create scan service account via PowerShell
New-ADUser -Name "SVC_VulnScan" `
-SamAccountName "SVC_VulnScan" `
-UserPrincipalName "SVC_VulnScan@domain.local" `
-Description "Vulnerability Scanner Service Account" `
-PasswordNeverExpires $true `
-CannotChangePassword $true `
-Enabled $true `
-AccountPassword (Read-Host -AsSecureString "Enter Password")
# Add to local Administrators group on targets via GPO or:
Add-ADGroupMember -Identity "Domain Admins" -Members "SVC_VulnScan"
# For least privilege, use a dedicated GPO for local admin rights instead
# Enable WinRM on targets
Enable-PSRemoting -Force
Set-Item WSMan:\localhost\Service\AllowRemote -Value $true
winrm set winrm/config/service '@{AllowUnencrypted="false"}'
