Vulnerability identifier: #VU5291

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-2423

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Visio
Client/Desktop applications / Office applications
Microsoft Word
Client/Desktop applications / Office applications
Microsoft Office
Client/Desktop applications / Office applications
Microsoft PowerPoint
Client/Desktop applications / Office applications
Microsoft Excel
Client/Desktop applications / Office applications

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to input validation error when processing command line parameters in Microsoft Office files at a medium integrity level within Internet Explorer running in Enhanced Protection Mode (EPM). A remote attacker can trick the victim into opening a specially crafted Office file and execute arbitrary commands on the target system with privileges of the current user.

The vulnerability resides within Microsoft Windows, Internet Explorer, and Microsoft Office.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from Microsoft website.

Vulnerable software versions

Microsoft Visio:

Microsoft Word:

Microsoft Office: 2010

Microsoft PowerPoint:

Microsoft Excel:

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External links
http://technet.microsoft.com/en-us/library/security/ms15-081.aspx

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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.