Executive Risk Summary
"A directory traversal vulnerability in the TS WebProxy component of Microsoft Windows allows remote attackers to gain privileges via a crafted pathname in an executable file. This vulnerability can be exploited to transition from Low Integrity to Medium Integrity, potentially leading to further exploitation."
Anticipated Attack Path
- 1. Initial exploitation of the directory traversal vulnerability
- 2. Escalation of privileges from Low Integrity to Medium Integrity
- 3. Potential further exploitation of the system
Am I Vulnerable?
- Verify the presence of the TS WebProxy component
- Check for the existence of crafted executable files
- Monitor system logs for suspicious activity
Operational Audit Arsenal
Target Type Service
Target Asset TSWebProxy
Standard Path C:\Windows\System32\tswebproxy.dll
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: TSWebProxy (Service)
$Targets = 'TSWebProxy'
$SearchPaths = @("$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 Services
Internal Work Notes
CVE-2015-0016: Directory Traversal Elevation of Privilege Vulnerability in Windows TS WebProxy component. Apply MS15-004 patch to mitigate.
Technical Intelligence & Operational Utilities • Delivered Weekly
Intelligence Sources
Official Advisoryhttp://blog.trendmicro.com/trendlabs-security-intelligence/cve-2015-0016-escaping-the-internet-explorer-sandbox/
Official Advisoryhttp://packetstormsecurity.com/files/130201/MS15-004-Microsoft-Remote-Desktop-Services-Web-Proxy-IE-Sandbox-Escape.html
Official Advisoryhttp://secunia.com/advisories/62076
Official Advisoryhttp://www.exploit-db.com/exploits/35983
Official Advisoryhttp://www.securityfocus.com/bid/71965
Official Advisoryhttp://www.securitytracker.com/id/1031524
MSRC Advisoryhttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-004
Official Advisoryhttps://exchange.xforce.ibmcloud.com/vulnerabilities/99515
Official Advisoryhttps://exchange.xforce.ibmcloud.com/vulnerabilities/99516
Official Advisoryhttp://blog.trendmicro.com/trendlabs-security-intelligence/cve-2015-0016-escaping-the-internet-explorer-sandbox/
Official Advisoryhttp://packetstormsecurity.com/files/130201/MS15-004-Microsoft-Remote-Desktop-Services-Web-Proxy-IE-Sandbox-Escape.html
Official Advisoryhttp://secunia.com/advisories/62076
Official Advisoryhttp://www.exploit-db.com/exploits/35983
Official Advisoryhttp://www.securityfocus.com/bid/71965
Official Advisoryhttp://www.securitytracker.com/id/1031524
MSRC Advisoryhttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-004
Official Advisoryhttps://exchange.xforce.ibmcloud.com/vulnerabilities/99515
Official Advisoryhttps://exchange.xforce.ibmcloud.com/vulnerabilities/99516
Official Advisoryhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-0016
Related Microsoft Threats
Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.