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Category:   Application (Web Server/CGI)  >   Microsoft Internet Information Server (IIS) Web Server Vendors:   Microsoft
Microsoft Internet Information Server (IIS) Web Server Buffer Overflow in WebDAV ScStoragePathFromUrl() Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1038168
SecurityTracker URL:  http://securitytracker.com/id/1038168
CVE Reference:   CVE-2017-7269   (Links to External Site)
Updated:  Jun 16 2017
Original Entry Date:  Mar 31 2017
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 6.0
Description:   A vulnerability was reported in Microsoft Internet Information Server (IIS) Web Server. A remote user can execute arbitrary code on the target system.

A remote user can send a WebDAV PROPFIND request with a specially crafted 'If' header to trigger a buffer overflow in the ScStoragePathFromUrl() function and execute arbitrary code on the target system. The code will run with the privileges of the target service.

[Editor's note: This vulnerability is being actively exploited.]

Demonstration exploit code is available in the original advisory at:

https://github.com/edwardz246003/IIS_exploit

Zhiniang Peng and Chen Wu, Information Security Lab & School of Computer Science & Engineering, South China University of Technology Guangzhou, China reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

https://support.microsoft.com/en-us/help/3197835/description-of-the-security-update-for-windows-xp-and-windows-server

Vendor URL:  support.microsoft.com/en-us/help/3197835/description-of-the-security-update-for-windows-xp-and-windows-server (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (2003), Windows (XP)
Underlying OS Comments:  XP SP2, XP SP3, 2003 SP2

Message History:   None.


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