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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Windows Remote Assistance XML External Entity Processing Flaw Lets Remote Users Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1040519
SecurityTracker URL:  http://securitytracker.com/id/1040519
CVE Reference:   CVE-2018-0878   (Links to External Site)
Date:  Mar 13 2018
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7 SP1, 2008 R2 SP1, 2008 SP2, 2012, 2012 R2, 8.1, RT 8.1, 2016, 10, 10 Version 1511, 2016, 10 Version 1607, 10 Version 1703, 10 Version 1709
Description:   A vulnerability was reported in Windows Remote Assistance. A remote user can conduct XML external entity attacks to obtain files on the target system.

A remote user can supply specially crafted XML External Entity (XXE) data to the target user to read known text files on the target user's system or read information from URLs access to the target user.

Nabeel Ahmed (via Trend Micro Zero Day Initiative) reported this vulnerability.

Impact:   A remote user can read files on the target system with the privileges of the target service.
Solution:   The vendor has issued a fix.

The Microsoft advisories are available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0878
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088782
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088776
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088877
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088878
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088875
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088787
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088876
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088779
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088786
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088879
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4088880
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4089344

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0878 (Links to External Site)
Cause:   Access control error

Message History:   None.


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