![]() ![]() The default setting is high, the other settings are very high, medium, and low. The page that opens displays the current security level of macros in LibreOffice. Select Tools > Options, or use the keyboard shortcut Alt-F12 to open the preferences.Open a LibreOffice application, e.g., LibreOffice Writer.To check or change the macro security setting, do the following: The exploit does not work if no trusted certificates are stored in LibreOffice or if the macro security level is set to very high. LibreOffice could then allow the execution of macros that are not signed using the trusted certificate this could lead to the execution of arbitrary code on the system using macros that are not trusted. LibreOffice matched "the serial number and issuer string of the used certificate with that of a trusted certificate" only, which is insufficient.Īn attacker could create an arbitrary certificate that matches the serial number and issuer string of a trusted certificate that LibreOffice uses. ![]() Security researchers detected an issue in the certification validation algorithm that LibreOffice uses. The macro is executed if a matching certificate is found, and blocked otherwise. When a document contains macros, LibreOffice attempts to match the certificate to the list of trusted certificates. ![]() LibreOffice maintains a list of trusted certificates that are stored in the user's configuration database. LibreOffice supports the execution of macros, but limits the execution to macros to documents that are either stored in a trusted file location or are signed by a trusted certificate. CVE-2022-26306 - Static Initialization Vector Allows to Recover Passwords for Web Connections Without Knowing the Master PasswordĮxecution of Untrusted Macros Due to Improper Certificate Validation.CVE-2022-26305 - Execution of Untrusted Macros Due to Improper Certificate Validation.The vulnerabilities have received a severity rating of high, which is the second only to a severity rating of critical. Three security vulnerabilities were reported to LibreOffice by OpenSource Security GMBH on behalf of the German Federal Office for Information Security. The application checks if a new version is available a new version is then downloaded and installed. Select Help > Check for Updates to run a check. LibreOffice supports manual update checks and the downloading of updates using the Office client. If it is lower than 7.2.7 or 7.3.3, LibreOffice is vulnerable to attacks that target the vulnerabilities. The page that opens displays the installed version. Open any LibreOffice application, e.g., LibreOffice Writer.Here is what you need to do to check the installed LibreOffice version: It walks users through setting up LibreOffice and the installation of optional components. To help the project save bandwidth, torrent downloads are recommended.Įxisting installations may be updated by running the provided installer. ![]() The latest versions of LibreOffice are LibreOffice 7.3.5.2 and LibreOffice 7.2.7 both are available as downloads on the official website. Updates for LibreOffice have been available for some time, but users and system administrators should check the installed versions to make sure that installations are protected against potential attacks targeting the vulnerabilities. LibreOffice 7.2.7 and 7.3.3 or later are secure Attackers may bypass LibreOffice's macro execution feature to run malicious macros and may access encrypted passwords when they exploit the issues successfully. All three desktop versions of LibreOffice are vulnerable to the security issues. LibreOffice is a popular cross-platform Microsoft Office alternative that is available for Windows, macOS and Linux. ![]()
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