#VU22687 Permissions, Privileges, and Access Controls in Microsoft Office - CVE-2019-1449

Vulnerability identifier: #VU22687

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-1449

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Microsoft Office
Client/Desktop applications / Office applications

Vendor: Microsoft

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to way Office Click-to-Run (C2R) components handle a specially crafted file, which could lead to a standard user, any AppContainer sandbox, and Office LPAC Protected View. A local user can run a specially crafted file and escalate privileges to SYSTEM level.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 365 ProPlus, 2019

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1449

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.