CVE-2019-9855

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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. LibreOffice also has a feature where documents can specify that pre-installed scripts can be executed on various document script events such as mouse-over, etc. Protection was added to block calling LibreLogo from script event handers. However a Windows 8.3 path equivalence handling flaw left LibreOffice vulnerable under Windows that a document could trigger executing LibreLogo via a Windows filename pseudonym. This issue affects: Document Foundation LibreOffice 6.2 versions prior to 6.2.7; 6.3 versions prior to 6.3.1.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-417

Affected software

Vendor	Product	Versions
Document Foundation	LibreOffice	>= 6.2, < 6.2.7; >= 6.3, < 6.3.1

References

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00055.htmlMailing List, Third Party Advisory
https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9855/Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00055.htmlMailing List, Third Party Advisory
https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9855/Vendor Advisory

Timeline

Published: Sep 6, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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