Microsoft Office Spoofing Vulnerability

1) Information disclosure

EUVDB-ID: #VU6295

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-0207

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper HTML tag input validation when parsing malicious files in Microsoft Outlook for Mac. A remote unauthenticated attacker can create a specially crafted email with specific HTML tags, trick the victim into opening it, perform spoofing attack and access authentication information or login credentials.

Successful exploitation of the vulnerability results in information disclosure.

Mitigation

Install updates from Microsoft website.

Vulnerable software versions

Microsoft Office for Mac: 2011

Microsoft Outlook for Mac: 2011

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0207

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.