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

Vulnerability identifier: #VU28799

CSH Severity: Medium

CVSS v4: 4.6 [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]

CVE-ID: CVE-2020-12802

CWE-ID: CWE-264

Exploitation vector: Remote access

Exploit availability: No public exploit available

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.

LibreOffice
libreoffice (Red Hat package)
libcmis (Red Hat package)
liborcus (Red Hat package)
libreoffice
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Opensuse
Fedora

Install updates from vendor's website.

LibreOffice - update to 6.4.4.1
libreoffice (Red Hat package) - update to 6.3.6.2-3.el8
libcmis (Red Hat package) - update to 0.5.2-1.el8
liborcus (Red Hat package) - update to 0.14.1-1.el8
libreoffice - update to 6.3.6.2-4.fc31

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

• Multiple vulnerabilities in LibreOffice
• OpenSUSE Linux update for libreoffice
• OpenSUSE Linux update for libreoffice
• Red Hat update for libreoffice
• Fedora 31 update for libreoffice