User credentials disclosure in Microsoft Outlook 2010

1) Information disclosure

EUVDB-ID: #VU12492

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 - Information exposure

Exploit availability: No

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: Service Pack 3

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

Microsoft Office Web Apps Server: 2010 Service Pack 2

External links

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

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.