CVE-2019-9851 Information

Description

LibreOffice is typically bundled with LibreLogo a programmable turtle vector graphics script which can execute arbitrary python commands contained with the document it is launched from. Protection was added to address CVE-2019-9848 to block calling LibreLogo from document event script handers e.g. mouse over. However LibreOffice also has a separate feature where documents can specify that pre-installed scripts can be executed on various global script events such as document-open etc. In the fixed versions global script event handlers are validated equivalently to document script event handlers. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html http://packetstormsecurity.com/files/154168/LibreOffice-Macro-Python-Code-Execution.html https://lists.debian.org/debian-lts-announce/2019/10/msg00005.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/ https://seclists.org/bugtraq/2019/Aug/28 https://usn.ubuntu.com/4102-1/ https://www.debian.org/security/2019/dsa-4501 https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9851

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8