CVE-2019-9851

HIGH

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.

References

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html

http://packetstormsecurity.com/files/154168/LibreOffice-Macro-Python-Code-Execution.html

https://lists.fedoraproject.org/archives/list/[email protected]/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

Details

Source: MITRE

Published: 2019-08-15

Updated: 2019-09-03

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL