CVE-2021-25631 Information

Description

In the LibreOffice 7-1 series in versions prior to 7.1.2 and in the 7-0 series in versions prior to 7.0.5 the denylist can be circumvented by manipulating the link so it doesn’t match the denylist but results in ShellExecute attempting to launch an executable type.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://www.libreoffice.org/about-us/security/advisories/cve-2021-25631/ https://positive.security/blog/url-open-rce#open-libreoffice https://positive.security/blog/url-open-rce#open-libreoffice

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8