Vulnerability identifier: #VU6011

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-0027

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Excel
Client/Desktop applications / Office applications
Microsoft Excel for Mac
Client/Desktop applications / Office applications
Excel Services on Microsoft SharePoint Server
Client/Desktop applications / Office applications
Microsoft Office
Client/Desktop applications / Office applications

Vendor: Microsoft

Description
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The vulnerability exists due to improper disclosing of the contents of memory when handling malicious Excel files. A remote attacker can create a specially crafted .xls file, trick the victim into opening it, trigger boundary error and gain access to important data.

Successful exploitation of this vulnerability may result in information disclosure.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Microsoft Excel:

Microsoft Excel for Mac: 2011 - 2016

Excel Services on Microsoft SharePoint Server: 2010 - 2013

Microsoft Office: 2013, 2010, 2007

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External links
http://technet.microsoft.com/en-us/library/security/MS17-014

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.