#VU9903 Memory corruption in Microsoft Office and Microsoft Outlook - CVE-2018-0791

Vulnerability identifier: #VU9903

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-0791

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Office
Client/Desktop applications / Office applications
Microsoft Outlook
Client/Desktop applications / Office applications

Vendor: Microsoft

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, 2010, 2013 RT Service Pack 1, 2013, 2016

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

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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.