Kaspersky Threats

Detect date

?

09/08/2015

Severity

?

High

Description

Multiple serious vulnerabilities have been found in Microsoft Office. Malicious users can exploit these vulnerabilities to execute arbitrary code or conduct XSS attack.

Below is a complete list of vulnerabilities

Improper memory objects handling can be exploited remotely via a specially designed file to execute arbitrary code;
Improper user-supplied web-requests sanitization at SharePoint can be exploited remotely via a specially designed user content to conduct cross-site-scripting;
An unknown vulnerability can be exploited remotely via a specially designed EPS file to execute arbitrary code.

Technical details

To exploit vulnerability (2) attacker must have ability to submit malicious content to a target site. In some conditions user content will not be sanitized. When user visits web page with malicious content? script could be run in security context of the user.

(3) could be exploited via specially designed EPS graphics contained in office document or when user inserts this graphics to office document. Also if Word is selected as default email reader (default) then attacker could send specially designed email contains malicious EPS graphics. In such conditions exploitations needs minimal users interaction (preview malicious email)

Affected products

Office 2007 Service Pack 3
Excel 2007 Service Pack 3
Office 2010 Service Pack 2
Excel 2010 Service Pack 2
Office 2013 Service Pack 1
Excel 2013 Service Pack 1
Office 2013 RT Service Pack 1
Excel 2013 RT Service Pack 1
Excel for Mac 2011
Excel for Mac 2016
Office Compatibility Pack Service Pack 3
Excel Viewer
SharePoint Foundation 2013 Service Pack 1

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

CVE-2015-2523
CVE-2015-2522
CVE-2015-2521
CVE-2015-2545
CVE-2015-2520

Impacts

?

ACE

[?]

SB

[?]

XSS/CSS

[?]

SUI

[?]

Detect date ?	09/08/2015
Severity ?	High
Description	Multiple serious vulnerabilities have been found in Microsoft Office. Malicious users can exploit these vulnerabilities to execute arbitrary code or conduct XSS attack. Below is a complete list of vulnerabilities Improper memory objects handling can be exploited remotely via a specially designed file to execute arbitrary code; Improper user-supplied web-requests sanitization at SharePoint can be exploited remotely via a specially designed user content to conduct cross-site-scripting; An unknown vulnerability can be exploited remotely via a specially designed EPS file to execute arbitrary code. Technical details To exploit vulnerability (2) attacker must have ability to submit malicious content to a target site. In some conditions user content will not be sanitized. When user visits web page with malicious content? script could be run in security context of the user. (3) could be exploited via specially designed EPS graphics contained in office document or when user inserts this graphics to office document. Also if Word is selected as default email reader (default) then attacker could send specially designed email contains malicious EPS graphics. In such conditions exploitations needs minimal users interaction (preview malicious email)
Affected products	Office 2007 Service Pack 3 Excel 2007 Service Pack 3 Office 2010 Service Pack 2 Excel 2010 Service Pack 2 Office 2013 Service Pack 1 Excel 2013 Service Pack 1 Office 2013 RT Service Pack 1 Excel 2013 RT Service Pack 1 Excel for Mac 2011 Excel for Mac 2016 Office Compatibility Pack Service Pack 3 Excel Viewer SharePoint Foundation 2013 Service Pack 1
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	CVE-2015-2523 CVE-2015-2522 CVE-2015-2521 CVE-2015-2545 CVE-2015-2520
Impacts ?	ACE [?] SB [?] XSS/CSS [?] SUI [?]
Related products	Microsoft Office Microsoft Excel
CVE-IDS ?	CVE-2015-25239.3Critical CVE-2015-25223.5Warning CVE-2015-25219.3Critical CVE-2015-25459.3Critical CVE-2015-25209.3Critical
Microsoft official advisories	Microsoft Security Update Guide
KB list	3054813 3085487 3085501 3085502 3085543 3085483 3088502 3088501 3054995 3054987 3054993 3089664 3054932 3054965 3085526
Exploitation	Public exploits exist for this vulnerability. Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.
	Find out the statistics of the vulnerabilities spreading in your region

KLA10661Multiple vulnerabillities in Microsoft Office

KLA10661
Multiple vulnerabillities in Microsoft Office