Remote code execution in Microsoft Outlook

Published: 2018-01-09

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-0791 CVE-2018-0793
CWE-ID	CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Microsoft Office Client/Desktop applications / Office applications Microsoft Outlook Client/Desktop applications / Office applications
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Memory corruption

EUVDB-ID: #VU9903

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0791

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The weakness exists in Microsoft Office software due to improper handling of objects in memory. A remote attacker can trick the victim into opening a specially crafted file, trigger memory corruption and execute arbitrary code with system privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Office: 2016

Microsoft Outlook: 2007 - 2016

CPE2.3

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0791

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 a file.

Is there known malware, which exploits this vulnerability?

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

2) Memory corruption

EUVDB-ID: #VU9912