#VU28799 Permissions, Privileges, and Access Controls in LibreOffice - CVE-2020-12802

Vulnerability identifier: #VU28799

Vulnerability risk: Medium

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-12802

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LibreOffice
Client/Desktop applications / Office applications

Vendor: LibreOffice

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to application does not properly impose security restrictions on remote graphic links loaded from docx documents, when LibreOffice has a 'stealth mode' enabled. A remote attacker can bypass implemented restriction and cause the application to load graphic links from untrused resources.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibreOffice: 6.3.0.0 - 6.3.0.4, 6.3.1 - 6.3.1.2, 6.3.2.1 - 6.3.2.2, 6.3.3.1 - 6.3.3.2, 6.3.4.1 - 6.3.4.2, 6.3.5.1 - 6.3.5.2, 6.3.6.1 - 6.3.6.2

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External links
https://www.libreoffice.org/about-us/security/advisories/CVE-2020-12802

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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.