#VU17641 Input validation error


Published: 2019-02-13

Vulnerability identifier: #VU17641

Vulnerability risk: Low

CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-0540

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Office
Client/Desktop applications / Office applications
Microsoft Word
Client/Desktop applications / Office applications
Microsoft Excel
Client/Desktop applications / Office applications
Microsoft Office Compatibility Pack
Client/Desktop applications / Office applications
Microsoft PowerPoint
Client/Desktop applications / Office applications

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to perform a phishing attack.

The vulnerability exists due to insufficient validation of URLs when processing Microsoft Office files. A remote attacker can create a specially crafted file, trick the victim into opening it and entering credentials.

Successful exploitation of the vulnerability may allow an attacker to perform a phishing attack and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 365 ProPlus - 2019

Microsoft Word: Viewer

Microsoft Excel: Viewer

Microsoft Office Compatibility Pack: Service Pack 3

Microsoft PowerPoint: Viewer


CPE

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0540


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.


Latest bulletins with this vulnerability