Remote code execution in Microsoft Office

Published: 2017-04-09 | Updated: 2017-04-12
Severity Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2017-0199
CWE ID CWE-20
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software Microsoft Office Subscribe
Vendor Microsoft

Security Advisory

This security advisory describes one critical risk vulnerability.

We are currently unaware of affected versions of Microsoft Office application. This bulletin will get updated once the information is confirmed.

1) Improper input validation

Severity: Critical

CVSSv3: 8.4 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]

CVE-ID: CVE-2017-0199

CWE-ID: CWE-20 - Improper Input Validation

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote unauthenticated attacker can create a specially crafted Office document, trick the victim into opening it with Microsoft Office or WordPad and execute arbitrary code on the target system with privileges of the current user.

Successful exploitation of this vulnerability may result in compromise vulnerable system.

Note: the vulnerability is being actively exploited.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Office: 2007, 2010, 2013, 2016

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0199

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open an attachment in an e-mail message.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.