#VU70222 Out-of-bounds write in Microsoft products - CVE-2022-44696

Vulnerability identifier: #VU70222

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-44696

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Office LTSC 2021
Other software / Other software solutions
Microsoft Office
Client/Desktop applications / Office applications
Microsoft 365 Apps for Enterprise
Client/Desktop applications / Office applications

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing DXF and DWG files in Microsoft Visio. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Office LTSC 2021: 32 bit editions - 64 bit editions

Microsoft Office: 2019

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

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External links
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2022-44696
https://www.zerodayinitiative.com/advisories/ZDI-22-1671/
https://www.zerodayinitiative.com/advisories/ZDI-22-1670/

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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.