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Category:   Application (Generic)  >   Microsoft Office Vendors:   Microsoft
Microsoft Office Memory Errors Let Remote Users Execute Arbitrary Code and Input Validation Flaw Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1032104
SecurityTracker URL:  http://securitytracker.com/id/1032104
CVE Reference:   CVE-2015-1639, CVE-2015-1641, CVE-2015-1649, CVE-2015-1650, CVE-2015-1651   (Links to External Site)
Date:  Apr 14 2015
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2007, 2010 SP2, 2013 SP1, 2013 RT SP1; Outlook for Mac for Office 365 ; Office for Mac 2011; Word Viewer; Office Compatibility Pack SP3
Description:   Multiple vulnerabilities were reported in Microsoft Office. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can conduct cross-site scripting attacks.

A remote user can create a specially crafted rich text format file that, when loaded by the target user, will trigger a memory corruption error and execute arbitrary code on the target system [CVE-2015-1641]. The code will run with the privileges of the target user.

A remote user can create a specially crafted Office file that, when loaded by the target user, will trigger a use-after-free memory error and execute arbitrary code on the target system [CVE-2015-1650]. The code will run with the privileges of the target user.

A remote user can create a specially crafted Office file that, when loaded by the target user, will trigger a use-after-free memory error and execute arbitrary code on the target system [CVE-2015-1649, CVE-2015-1651]. The code will run with the privileges of the target user. The Preview Pane is also affected.

Microsoft Outlook for Mac does not properly filter HTML code from user-supplied input before displaying the input. A remote user can cause arbitrary scripting code to be executed by the target user's browser. The code will run in the security context of that site serving the content. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

3S Labs (via HP's Zero Day Initiative), s3tm3m@gmail.com (via with VeriSign iDefense Labs), Jack Tang of Trend Micro, and Ben Hawkes of Google Project Zero reported these vulnerabilities.

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

A remote user can access the target user's cookies (including authentication cookies), if any, associated with an arbitrary site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Solution:   The vendor has issued a fix.

A patch matrix is available in the vendor's advisory.

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms15-033

Vendor URL:  technet.microsoft.com/library/security/ms15-033 (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  UNIX (macOS/OS X), Windows (Any)

Message History:   None.


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