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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Windows Uniscribe Object Memory Handling Errors Let Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code
SecurityTracker Alert ID:  1039344
SecurityTracker URL:  http://securitytracker.com/id/1039344
CVE Reference:   CVE-2017-8692, CVE-2017-8695, CVE-2017-8696   (Links to External Site)
Date:  Sep 13 2017
Impact:   Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7 SP1, 8.1, RT 8.1, 2008 R2 SP1, 2012, 2012 R2, 2016, 10, 10 Version 1511, 10 Version 1607, 10 Version 1703
Description:   Several vulnerabilities were reported in Windows Uniscribe. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can obtain potentially sensitive information on the target system.

A remote user can create specially crafted content that, when loaded by the target user, will trigger an object memory handling error and execute arbitrary code on the target user's system [CVE-2017-8692]. Windows 7 SP1 and 2008 R2 SP1 are not affected.

A remote user can create specially crafted content that, when loaded by the target user, will trigger an object memory handling error and obtain potentially sensitive information on the target user's system [CVE-2017-8695].

A remote user can create specially crafted content that, when loaded by the target user, will trigger an object memory handling error and execute arbitrary code on the target user's system [CVE-2017-8696].

Yong Chuan Koh (@yongchuank) of MWR Labs, Jaanus Kp Clarified Security (via Trend Micro Zero Day Initiative), and Axel Souchet of MSRC Vulnerabilities & Mitigations reported these vulnerabilities.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.

A remote user can obtain potentially sensitive information on the target system.

Solution:   The vendor has issued a fix.

The Microsoft advisories are available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8692
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8695
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8696

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8692 (Links to External Site)
Cause:   Access control error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Sep 13 2017 (Microsoft Issues Fix for Microsoft Lync) Windows Uniscribe Object Memory Handling Errors Let Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code
Microsoft has issued a fix for Microsoft Lync.
Sep 13 2017 (Microsoft Issues Fix for Microsoft Skype for Business) Windows Uniscribe Object Memory Handling Errors Let Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code
Microsoft has issued a fix for Microsoft Skype for Business.
Sep 13 2017 (Microsoft Issues Fix for Microsoft Office) Windows Uniscribe Object Memory Handling Errors Let Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code
Microsoft has issued a fix for Microsoft Office.



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