Phishing attack in Microsoft Office
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-0540 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| 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 |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU17641
Risk: Low
CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2019-0540
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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.
Install updates from vendor's website.
Vulnerable software versionsMicrosoft Office: 365 ProPlus - 2019
Microsoft Word: Viewer
Microsoft Excel: Viewer
Microsoft Office Compatibility Pack: Service Pack 3
Microsoft PowerPoint: Viewer
CPE2.3- cpe:2.3:a:microsoft:microsoft_office:365_ProPlus:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office:2010_Service_Pack_2:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office:2013_RT:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_word:Viewer:*:*:*:*:microsoft_office:*:*
- cpe:2.3:a:microsoft:microsoft_excel:Viewer:*:*:*:*:microsoft_office:*:*
- cpe:2.3:a:microsoft:microsoft_office_compatibility_pack:Service_Pack_3:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:powerpoint:Viewer:*:*:*:*:microsoft_office:*:*
https://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.
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.
