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Detection Methods
To identify vulnerable SharePoint Server installations, use the following PowerShell command:
Get-SPFarm | Select BuildVersion
Affected systems will show a BuildVersion value before the patched version, while patched systems will display a version including or after the fixed release.
Mitigation Steps
The primary mitigation is to update Microsoft SharePoint Server Subscription Edition to the latest patched version. For Windows environments, follow these steps:
1. Check current version:
Get-SPFarm | Select BuildVersion, PatchLevel
- Download the latest cumulative update from Microsoft Update Catalog
3. Install the update package:
<h1>Run the update package with administrative privileges</h1> Start-Process -FilePath "SharePointUpdate.exe" -ArgumentList "/quiet" -Wait
4. Verify the update:
Get-SPFarm | Select BuildVersion, PatchLevel
You Should Know: SharePoint Security Best Practices
1. Regular Patching:
<h1>Schedule regular update checks</h1>
Register-ScheduledJob -Name "SharePointUpdateCheck" -ScriptBlock {
$update = Get-SPFarm | Select BuildVersion
<h1>Add notification logic here</h1>
} -Trigger (New-JobTrigger -Weekly -At "Saturday 2:00AM")
2. Hardening SharePoint Servers:
<h1>Disable unnecessary services</h1>
Get-SPServiceInstance | Where-Object {$_.TypeName -notin @("SharePoint Server Search")} | Stop-SPServiceInstance
3. Monitoring for Anomalies:
<h1>Create a daily security audit report</h1>
$logPath = "C:\SharePointAudit\SecurityAudit_$(Get-Date -Format yyyyMMdd).log"
Get-SPLogEvent -StartTime (Get-Date).AddDays(-1) | Where-Object {$<em>.Level -eq "Error" -or $</em>.Area -eq "Security"} | Export-Csv $logPath
4. Backup Strategies:
<h1>Automated backup script</h1> Backup-SPFarm -Directory "\backup\sharepoint" -BackupMethod Full -Verbose
5. Firewall Configuration:
<h1>Example Linux firewall rules for SharePoint proxy (if applicable)</h1> iptables -A INPUT -p tcp --dport 80 -j ACCEPT iptables -A INPUT -p tcp --dport 443 -j ACCEPT iptables -A INPUT -p tcp --dport 32843 -j ACCEPT # SharePoint Central Admin iptables -A INPUT -p udp --dport 53 -j ACCEPT # DNS if running locally
What Undercode Say
The CVE-2025-24045 vulnerability in Microsoft SharePoint Server underscores the critical importance of maintaining rigorous patch management processes in enterprise environments. This particular vulnerability, while technical in nature, represents a common class of security flaws that emerge in complex collaboration platforms. The detection method using `Get-SPFarm` provides a straightforward way to assess vulnerability status, but organizations should augment this with comprehensive monitoring.
For Linux administrators managing hybrid environments, consider these complementary commands to monitor SharePoint-adjacent services:
<h1>Monitor network connections to SharePoint servers</h1> netstat -tulnp | grep -E '80|443|32843' <h1>Check for suspicious processes</h1> ps aux | grep -i 'powershell|w3wp' <h1>Analyze IIS logs (if on Linux-connected systems)</h1> grep -i 'exception|error' /var/log/iislogs/*.log <h1>Verify SSL certificates</h1> openssl s_client -connect sharepoint.example.com:443 | openssl x509 -noout -text
Windows administrators should incorporate these additional checks into their regular maintenance routines:
<h1>Check for unusual service accounts</h1>
Get-SPServiceApplicationPool | Select AccountName
<h1>Verify security token service configuration</h1>
Get-SPSecurityTokenServiceConfig
<h1>Audit user permissions</h1>
Get-SPSite | Get-SPUser | Where-Object {$_.IsSiteAdmin -eq $true}
<h1>Monitor memory usage patterns</h1>
Get-Process w3wp | Sort-Object WS -Descending | Select -First 10
The mitigation path is clear – immediate patching – but the broader lesson is about establishing proactive security postures. Organizations should implement:
1. Regular vulnerability scanning beyond just SharePoint
2. Comprehensive logging with centralized analysis
- Principle of least privilege for all service accounts
4. Network segmentation for sensitive collaboration systems
5. Incident response drills specific to collaboration platforms
Expected Output:
For vulnerable systems, the `Get-SPFarm` command will return build version numbers below the patched threshold, while patched systems will show version numbers at or above the secure baseline. The exact version numbers will depend on Microsoft’s specific patch releases for this CVE.
References:
Reported By: Vulns Space – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
