Information disclosure in Microsoft Excel

1) Information disclosure

EUVDB-ID: #VU80726

Risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-36766

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file and gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Office LTSC: 32 bit editions - 2021 for Mac

Microsoft Office: 2019 for Mac - 2019

Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems

Office Online Server: before 16.0.10402.20000

Microsoft Excel: before 15.0.5589.1000, 16.0.5413.1000, 15.0.5589.1000

CPE2.3

• cpe:2.3:a:microsoft:microsoft_office_ltsc:32:bit editions:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_office_ltsc:64:bit editions:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_office_ltsc:2021:for Mac:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_office:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_365_apps_for_enterprise:32-bit_Systems:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_365_apps_for_enterprise:64-bit_Systems:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:office_online_server:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_excel:*:*:*:*:*:microsoft_office:*:*

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36766

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.