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Ubuntu: (Multiple Advisories) (CVE-2022-26305): LibreOffice vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2022-26305): LibreOffice vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
07/25/2022
Created
10/12/2022
Added
10/07/2022
Modified
10/21/2022

Description

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.

Solution(s)

  • ubuntu-upgrade-libreoffice

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