SB2020061847 - Fedora 31 update for libreoffice

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Main Vulnerability Database SB2020061847

SB2020061847 - Fedora 31 update for libreoffice

Published: June 18, 2020 Updated: April 25, 2025

Security Bulletin ID SB2020061847
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Input validation error (CVE-ID: CVE-2020-12803)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to overwrite arbitrary files on the system.

The vulnerability exists due to insufficient validation of user-supplied input when processing submittable forms in ODF documents. LibreOffice allows to submit data to forms, available via the file:// URI. A remote attacker can create a specially crafted form, trick the victim into submitting it and overwrite arbitrary files on the system with privileges of the current user.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-12802)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 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


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.


Remediation

Install update from vendor's website.

References