Vulnerability identifier: #VU25203

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0696

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

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

Vendor: Microsoft

Description

This vulnerability allows a local attacker to bypass security rescritions feature.

The vulnerability exists due to the Microsoft Outlook software improperly handles the parsing of URI formats. A remote attacker can trick a victim to open a specially crafted URI and execute target application.

The security feature bypass by itself does not allow arbitrary code execution. However, to successfully exploit the vulnerability, an attacker would have to use it in conjunction with another vulnerability, such as a remote code execution vulnerability.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 2019, 365 ProPlus

Microsoft Outlook:

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0696

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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.