![]() LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurred since the last signing and that the signature is valid. This issue affects: The Document Foundation LibreOffice 7-0 versions prior to 7.0.6 7-1 versions prior to 7.1.2. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to modify a digitally signed ODF document to insert an additional signing time timestamp which LibreOffice would incorrectly present as a valid signature signed at the bogus signing time. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.5. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to create a digitally signed ODF document, by manipulating the documentsignatures.xml or macrosignatures.xml stream within the document to contain both "X509Data" and "KeyValue" children of the "KeyInfo" tag, which when opened caused LibreOffice to verify using the "KeyValue" but to report verification with the unrelated "X509Data" value. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7 7.3 versions prior to 7.3.1. 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 is not sufficient to verify that the macro was actually signed with the certificate. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7 7.3 versions prior to 7.3.1.Īn 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. A flaw in LibreOffice existed where the required initialization vector for encryption was always the same which weakens the security of the encryption making them vulnerable if an attacker has access to the user's configuration data. The stored passwords are encrypted with a single master key provided by the user. LibreOffice supports the storage of passwords for web connections in the user’s configuration database. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7 7.3 versions prior to 7.3.3. A flaw in LibreOffice existed where master key was poorly encoded resulting in weakening its entropy from 128 to 43 bits making the stored passwords vulerable to a brute force attack if an attacker has access to the users stored config. This issue affects: The Document Foundation LibreOffice 7.4 versions prior to 7.4.1 7.3 versions prior to 7.3.6. ![]() Which when clicked on, or activated by document events, could result in arbitrary script execution without warning. ![]() In the affected versions of LibreOffice links using that scheme could be constructed to call internal macros with arbitrary arguments. An additional scheme '' specific to LibreOffice was added. LibreOffice supports Office URI Schemes to enable browser integration of LibreOffice with MS SharePoint server. If you want to see a complete summary for this CPE, please contact us.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |