# CVE-2024-30384: Junos OS: EX4300 Series: If a specific CLI command is issued PFE crashes will occur

> A locally authenticated attacker can crash the Packet Forwarding Engine on Juniper EX4300 switches by issuing a specific CLI command, causing a denial of service.

- **Severity:** Medium 6.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Apr 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-76fc-hwwm-wmhg

## What is CVE-2024-30384?

CVE-2024-30384 is a medium-severity denial of service vulnerability in Juniper Junos, published on 12 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on EX4300 Series allows a locally authenticated attacker with low privileges to cause a Denial-of-Service (Dos).

If a specific CLI command is issued, a PFE crash will occur. This will cause traffic forwarding to be interrupted until the system self-recovers. 

This issue affects Junos OS: 

All versions before 20.4R3-S10,

21.2 versions before 21.2R3-S7,

21.4 versions before 21.4R3-S6.

Weakness: CWE-754 (Improper Check for Unusual or Exceptional Conditions)

## Which versions are affected by CVE-2024-30384?

It affects 1 product.


Products: Juniper Junos.

## How do I fix CVE-2024-30384?

No fix has been published for CVE-2024-30384 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-30384 being exploited?

There is no known exploitation of CVE-2024-30384 in the wild and no public exploit code.

## Other vulnerabilities in Juniper Junos

- [CVE-2023-36845](https://insights.sbomify.com/CVE-2023-36845/): Juniper Junos OS EX Series and SRX Series PHP External Variable Modification (critical 9.8, exploited in the wild)
- [CVE-2020-1631](https://insights.sbomify.com/CVE-2020-1631/): Juniper Junos OS Path Traversal (high 8.8, exploited in the wild)
- [CVE-2025-21590](https://insights.sbomify.com/CVE-2025-21590/): Juniper Junos OS Improper Isolation or Compartmentalization (medium 6.7, exploited in the wild)
- [CVE-2023-36851](https://insights.sbomify.com/CVE-2023-36851/): Juniper Junos OS SRX Series Missing Authentication for Critical Function (medium 5.3, exploited in the wild)
- [CVE-2023-36844](https://insights.sbomify.com/CVE-2023-36844/): Juniper Junos OS EX Series PHP External Variable Modification (medium 5.3, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-30384 and fix it if it is affected.

What it is: CVE-2024-30384 is a medium-severity denial of service vulnerability in Juniper Junos, published on 12 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-30384 in the wild and no public exploit code.

Affected product: Juniper Junos. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-30384/ (Markdown: https://insights.sbomify.com/CVE-2024-30384/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-30384
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-30384
- OSV: https://osv.dev/vulnerability/CVE-2024-30384

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-30384/
Summaries are generated and may contain mistakes; the official description above is the record.