-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Format: 1.8 Date: Fri, 29 Dec 2023 09:39:36 +0000 Source: libreoffice Architecture: source Version: 1:6.1.5-3+deb10u11 Distribution: buster-security Urgency: high Maintainer: Debian LibreOffice Maintainers <debian-openoffice@lists.debian.org> Changed-By: Bastien Roucariès <rouca@debian.org> Changes: libreoffice (1:6.1.5-3+deb10u11) buster-security; urgency=high . * Team upload by LTS security team. * Fix CVE-2023-6185: An Improper Input Validation vulnerability was found in GStreamer integration of The Document Foundation LibreOffice allows an attacker to execute arbitrary GStreamer plugins. In affected versions the filename of the embedded video is not sufficiently escaped when passed to GStreamer enabling an attacker to run arbitrary gstreamer plugins depending on what plugins are installed on the target system. * Fix CVE-2023-6186: LibreOffice supports hyperlinks. In addition to the typical common protocols such as http/https hyperlinks can also have target URLs that can launch built-in macros or dispatch built-in internal commands. In affected version of LibreOffice there are scenarios where these can be executed without warning if the user activates such hyperlinks. In later versions the users's explicit macro execution permissions for the document are now consulted if these non-typical hyperlinks can be executed. The possibility to use these variants of hyperlink targets for floating frames has been removed. * Fix CVE-2020-12802: LibreOffice has a 'stealth mode' in which only documents from locations deemed 'trusted' are allowed to retrieve remote resources. This mode is not the default mode, but can be enabled by users who want to disable LibreOffice's ability to include remote resources within a document. A flaw existed where remote graphic links loaded from docx documents were omitted from this protection. * Fix CVE-2020-12801: If LibreOffice has an encrypted document open and crashes, that document is auto-saved encrypted. On restart, LibreOffice offers to restore the document and prompts for the password to decrypt it. If the recovery is successful, and if the file format of the recovered document was not LibreOffice's default ODF file format, then affected versions of LibreOffice default that subsequent saves of the document are unencrypted. This may lead to a user accidentally saving a MSOffice file format document unencrypted while believing it to be encrypted. * Fix CVE-2020-12803: ODF documents can contain forms to be filled out by the user. Similar to HTML forms, the contained form data can be submitted to a URI, for example, to an external web server. To create submittable forms, ODF implements the XForms W3C standard, which allows data to be submitted without the need for macros or other active scripting. LibreOffice allowed forms to be submitted to any URI, including file: URIs, enabling form submissions to overwrite local files. User-interaction is required to submit the form, but to avoid the possibility of malicious documents engineered to maximize the possibility of inadvertent user submission this feature has now been limited to http[s] URIs, removing the possibility to overwrite local files. 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