CVE Vulnerabilities

CVE-2022-26305

Improper Certificate Validation

Published: Jul 25, 2022 | Modified: Mar 26, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
7.1 MODERATE
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM

An Improper Certificate Validation vulnerability in LibreOffice existed where determining if a macro was signed by a trusted author was done by only matching the serial number and issuer string of the used certificate with that of a trusted certificate. This is not sufficient to verify that the macro was actually signed with the certificate. An adversary could therefore create an arbitrary certificate with a serial number and an issuer string identical to a trusted certificate which LibreOffice would present as belonging to the trusted author, potentially leading to the user to execute arbitrary code contained in macros improperly trusted. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.1.

Weakness

The product does not validate, or incorrectly validates, a certificate.

Affected Software

Name Vendor Start Version End Version
Libreoffice Libreoffice 7.2.0 (including) 7.2.7 (excluding)
Libreoffice Libreoffice 7.3.0 (including) 7.3.2 (excluding)
Red Hat Enterprise Linux 8 RedHat libreoffice-1:6.4.7.2-12.el8_7 *
Red Hat Enterprise Linux 9 RedHat libreoffice-1:7.1.8.1-8.el9_1 *
Libreoffice Ubuntu bionic *
Libreoffice Ubuntu focal *
Libreoffice Ubuntu trusty *
Libreoffice Ubuntu upstream *
Libreoffice Ubuntu xenial *

Potential Mitigations

References