Vulnerability identifier: #VU15869

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8579

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to an error when attaching files to Outlook messages. A remote attacker can attach a file as a link to an email, ignore the default organizational setting and share attached files such that they are accessible by anonymous users where they should be restricted to specific users.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 2019, 365 ProPlus

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8579

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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.