Kaspersky Threats

Detect date

?

11/14/2017

Severity

?

Critical

Description

Multiple serious vulnerabilities have been found in Microsoft Office. Malicious users can exploit these vulnerabilities to execute arbitrary code, bypass security restrictions and privilege escalations.

Below is a complete list of vulnerabilities:

Multiple vulnerabilities related to an incorrect handing of objects in memory in Microsoft Office can be exploited remotely via sending a specially designed document to affected system to execute arbitrary code;
An improper user sessions management in Microsoft Project Server can be exploited remotely via a specially designed website to gain privileges;
An incorrect process of processing macros settings in Excel document can be exploited remotely to bypass security restrictions;

Technical details

Vulnerability (1) requires that a user open a file with an affected version of Microsoft Office.

Affected products

Microsoft Word 2016 for Mac
Microsoft Excel 2016 Click-to-Run (C2R) for 32-bit editions
Microsoft Excel 2016 Click-to-Run (C2R) for 64-bit editions
Microsoft Excel 2007 Service Pack 3
Microsoft Excel 2010 Service Pack 2 (32-bit editions)
Microsoft Excel 2010 Service Pack 2 (64-bit editions)
Microsoft Excel 2013 RT Service Pack 1
Microsoft Excel 2013 Service Pack 1 (32-bit editions)
Microsoft Excel 2013 Service Pack 1 (64-bit editions)
Microsoft Excel 2016 (32-bit edition)
Microsoft Excel 2016 (64-bit edition)
Microsoft Excel 2016 for Mac
Microsoft Excel Viewer 2007 Service Pack 3
Microsoft Office 2007 Service Pack 3
Microsoft Office 2010 Service Pack 2 (32-bit editions)
Microsoft Office 2010 Service Pack 2 (64-bit editions)
Microsoft Office 2013 Service Pack 1 (32-bit editions)
Microsoft Office 2013 Service Pack 1 (64-bit editions)
Microsoft Office 2016 (32-bit edition)
Microsoft Office 2016 (64-bit edition)
Microsoft Office Compatibility Pack Service Pack 3
Microsoft Office Web Apps 2010 Service Pack 2
Microsoft Office Web Apps Server 2013 Service Pack 1
Microsoft Office Word Viewer
Microsoft Project Server 2013 Service Pack 1
Microsoft SharePoint Enterprise Server 2016
Microsoft Word 2007 Service Pack 3
Microsoft Word 2010 Service Pack 2 (32-bit editions)
Microsoft Word 2010 Service Pack 2 (64-bit editions)
Microsoft Word 2013 RT Service Pack 1
Microsoft Word 2013 Service Pack 1 (32-bit editions)
Microsoft Word 2013 Service Pack 1 (64-bit editions)
Microsoft Word 2016 (32-bit edition)
Microsoft Word 2016 (64-bit edition)

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

Original advisories

ADV170020
CVE-2017-11854
CVE-2017-11876
CVE-2017-11877
CVE-2017-11878
CVE-2017-11882
CVE-2017-11884

Impacts

?

ACE

[?]

SB

[?]

PE

[?]

Detect date ?	11/14/2017
Severity ?	Critical
Description	Multiple serious vulnerabilities have been found in Microsoft Office. Malicious users can exploit these vulnerabilities to execute arbitrary code, bypass security restrictions and privilege escalations. Below is a complete list of vulnerabilities: Multiple vulnerabilities related to an incorrect handing of objects in memory in Microsoft Office can be exploited remotely via sending a specially designed document to affected system to execute arbitrary code; An improper user sessions management in Microsoft Project Server can be exploited remotely via a specially designed website to gain privileges; An incorrect process of processing macros settings in Excel document can be exploited remotely to bypass security restrictions; Technical details Vulnerability (1) requires that a user open a file with an affected version of Microsoft Office.
Affected products	Microsoft Word 2016 for Mac Microsoft Excel 2016 Click-to-Run (C2R) for 32-bit editions Microsoft Excel 2016 Click-to-Run (C2R) for 64-bit editions Microsoft Excel 2007 Service Pack 3 Microsoft Excel 2010 Service Pack 2 (32-bit editions) Microsoft Excel 2010 Service Pack 2 (64-bit editions) Microsoft Excel 2013 RT Service Pack 1 Microsoft Excel 2013 Service Pack 1 (32-bit editions) Microsoft Excel 2013 Service Pack 1 (64-bit editions) Microsoft Excel 2016 (32-bit edition) Microsoft Excel 2016 (64-bit edition) Microsoft Excel 2016 for Mac Microsoft Excel Viewer 2007 Service Pack 3 Microsoft Office 2007 Service Pack 3 Microsoft Office 2010 Service Pack 2 (32-bit editions) Microsoft Office 2010 Service Pack 2 (64-bit editions) Microsoft Office 2013 Service Pack 1 (32-bit editions) Microsoft Office 2013 Service Pack 1 (64-bit editions) Microsoft Office 2016 (32-bit edition) Microsoft Office 2016 (64-bit edition) Microsoft Office Compatibility Pack Service Pack 3 Microsoft Office Web Apps 2010 Service Pack 2 Microsoft Office Web Apps Server 2013 Service Pack 1 Microsoft Office Word Viewer Microsoft Project Server 2013 Service Pack 1 Microsoft SharePoint Enterprise Server 2016 Microsoft Word 2007 Service Pack 3 Microsoft Word 2010 Service Pack 2 (32-bit editions) Microsoft Word 2010 Service Pack 2 (64-bit editions) Microsoft Word 2013 RT Service Pack 1 Microsoft Word 2013 Service Pack 1 (32-bit editions) Microsoft Word 2013 Service Pack 1 (64-bit editions) Microsoft Word 2016 (32-bit edition) Microsoft Word 2016 (64-bit edition)
Solution	Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)
Original advisories	ADV170020 CVE-2017-11854 CVE-2017-11876 CVE-2017-11877 CVE-2017-11878 CVE-2017-11882 CVE-2017-11884
Impacts ?	ACE [?] SB [?] PE [?]
Related products	Microsoft Office Professional Plus 2010 Microsoft Office Microsoft Excel Microsoft Word
CVE-IDS ?	CVE-2017-118549.3Critical CVE-2017-118766.8High CVE-2017-118774.3Warning CVE-2017-118789.3Critical CVE-2017-118829.3Critical CVE-2017-118849.3Critical
Microsoft official advisories	Microsoft Security Update Guide
KB list	4011242 4011247 4011268 4011245 4011244 4011265 4011264 4011267 4011266 4011262 4011206 4011205 4011220 3162047 4011233 4011250 4011199 4011257 4011270 4011271 4011197 4011618 4011020 4011604
Exploitation	This vulnerability can be exploited by the following malware: https://threats.kaspersky.com/en/threat/Exploit.MSOffice.CVE-2017-11882/ https://threats.kaspersky.com/en/threat/Exploit.Win32.CVE-2017-11882/ https://threats.kaspersky.com/en/threat/Trojan.Win32.FormBook/ https://threats.kaspersky.com/en/threat/Trojan-PSW.Win32.Azorult/ The following public exploits exists for this vulnerability: https://www.exploit-db.com/exploits/43163 https://threats.kaspersky.com/en/threat/Exploit.MSOffice.CVE-2017-11882/ https://threats.kaspersky.com/en/threat/Exploit.Win32.CVE-2017-11882/