#VU70171 Use-after-free in Microsoft 365 Apps for Enterprise - CVE-2022-26805

Vulnerability identifier: #VU70171

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/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-2022-26805

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
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 use-after-free error when processing SKP files. A remote attacker can trick the victim to open a specially crafted SKP file, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft 365 Apps for Enterprise: before 16.0.14326.21248, 16.0.14931.20858, 16.0.15601.20378, 16.0.15629.20298, 16.0.15726.20262, 16.0.15831.20208, 16.0.14326.21248

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-26805
https://www.zerodayinitiative.com/advisories/ZDI-22-1669/

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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.