CVE-2019-9850

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. 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 address CVE-2019-9848, to block calling LibreLogo from script event handers. However an insufficient url validation vulnerability in LibreOffice allowed malicious to bypass that protection and again trigger calling LibreLogo from 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

https://lists.fedoraproject.org/archives/list/[email protected]/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/

https://lists.fedoraproject.org/archives/list/[email protected]/message/WVSDPZJG3UA43X3JXRHJAWXLDZEW77LM/

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-2019-9850

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