CVE-2019-9852

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CVE-2019-9852

Summary:

Details: LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.

References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/, http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html, http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html, https://lists.debian.org/debian-lts-announce/2019/10/msg00005.html, https://seclists.org/bugtraq/2019/Sep/17, https://usn.ubuntu.com/4102-1/, https://www.debian.org/security/2019/dsa-4501, https://seclists.org/bugtraq/2019/Aug/28, https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852