Multiple vulnerabilities in Microsoft Excel

Published: 2020-04-14

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-0906 CVE-2020-0979
CWE-ID	CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Microsoft Office Client/Desktop applications / Office applications Microsoft Excel Client/Desktop applications / Office applications
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU26849

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0906

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Microsoft Excel. A remote attacker can send a specially crafted file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability..

Vulnerable software versions

Microsoft Office: 365 ProPlus - 2019

Microsoft Excel: 2010 - 2016

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0906

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.

2) Buffer overflow

EUVDB-ID: #VU26850