Vulnerability identifier: #VU12492

Vulnerability risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8160

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Office
Client/Desktop applications / Office applications
Microsoft Office Compatibility Pack
Client/Desktop applications / Office applications
Word Automation Services on Microsoft SharePoint Server
Server applications / Other server solutions
Microsoft Office Web Apps Server
Server applications / Application servers

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to an error when processing contents of email messages. A remote attacker can create a specially crafted email and make the application to send an SMB request to an attacker controlled SMB server. A remote attacker can obtain victim's credentials and gain unauthorized access to email account or corporate network. Depending on the URL contained in the malicious email, Outlook could fall back to initating a web request to a remote server, disclosing the the external IP of the user's system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 2010 Service Pack 2

Microsoft Office Compatibility Pack:

Word Automation Services on Microsoft SharePoint Server: 2010 Service Pack 2

Microsoft Office Web Apps Server: 2010 Service Pack 2

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8160

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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.