Executive Risk Summary
"A vulnerability in Microsoft Terminal Server using Remote Desktop Protocol (RDP) 5.2 allows remote attackers to spoof public keys of legitimate servers and conduct man-in-the-middle attacks. This is due to the storage of an RSA private key in mstlsapi.dll, which is used to sign a certificate."
Anticipated Attack Path
- 1. Exploitation of the RDP 5.2 vulnerability
- 2. Spoofing of public keys of legitimate servers
- 3. Conducting of man-in-the-middle attacks
Am I Vulnerable?
- Verify the version of RDP being used
- Check for any suspicious certificate activity
- Monitor for unusual network traffic
Operational Audit Arsenal
Target Type DLL
Target Asset mstlsapi.dll
Standard Path C:\Windows\System32
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: mstlsapi.dll (DLL)
$Targets = 'mstlsapi.dll'
$SearchPaths = @("$env:windir\System32", "$env:ProgramFiles", "${env:ProgramFiles(x86)}")
Get-ChildItem -Path $SearchPaths -Include $Targets -Recurse -ErrorAction SilentlyContinue |
Select-Object FullName, @{Name="Version";Expression={$_.VersionInfo.ProductVersion}} Patch Impact Forecast
Reboot Required Likely
Potential disruption to remote desktop connections
Internal Work Notes
Investigate and apply patch for Microsoft Terminal Server RDP 5.2 vulnerability to prevent man-in-the-middle attacks.
Technical Intelligence & Operational Utilities • Delivered Weekly
Intelligence Sources
Official Advisoryhttp://secunia.com/advisories/15605/
Official Advisoryhttp://www.oxid.it/downloads/rdp-gbu.pdf
Official Advisoryhttp://www.securityfocus.com/bid/13818
Official Advisoryhttps://ics-cert.us-cert.gov/advisories/ICSMA-18-058-02
Official Advisoryhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12441
Official Advisoryhttp://secunia.com/advisories/15605/
Official Advisoryhttp://www.oxid.it/downloads/rdp-gbu.pdf
Official Advisoryhttp://www.securityfocus.com/bid/13818
Official Advisoryhttps://ics-cert.us-cert.gov/advisories/ICSMA-18-058-02
Official Advisoryhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12441
Related Microsoft Threats
Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.