# CVE-2017-2348: Junos OS: jdhcpd daemon crash due to invalid IPv6 UDP packets

> An attacker can cause a denial of service in Junos OS by sending invalid IPv6 UDP packets, crashing the jdhcpd daemon and interrupting DHCP services.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Jul 2017
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-3vv6-22qm-hgwq

## What is CVE-2017-2348?

CVE-2017-2348 is a high-severity denial of service vulnerability in Juniper Junos, published on 14 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Juniper Enhanced jdhcpd daemon may experience high CPU utilization, or crash and restart upon receipt of an invalid IPv6 UDP packet. Both high CPU utilization and repeated crashes of the jdhcpd daemon can result in a denial of service as DHCP service is interrupted. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS 14.1X53 prior to 14.1X53-D12, 14.1X53-D38, 14.1X53-D40 on QFX, EX, QFabric System; 15.1 prior to 15.1F2-S18, 15.1R4 on all products and platforms; 15.1X49 prior to 15.1X49-D80 on SRX; 15.1X53 prior to 15.1X53-D51, 15.1X53-D60 on NFX, QFX, EX.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2017-2348?

It affects 1 product.


Products: Juniper Junos.

## How do I fix CVE-2017-2348?

No fix has been published for CVE-2017-2348 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-2348 being exploited?

There is no known exploitation of CVE-2017-2348 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-2017-2348 and fix it if it is affected.

What it is: CVE-2017-2348 is a high-severity denial of service vulnerability in Juniper Junos, published on 14 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-2348 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-2017-2348/ (Markdown: https://insights.sbomify.com/CVE-2017-2348/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-2348
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-2348
- OSV: https://osv.dev/vulnerability/CVE-2017-2348

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-2348/
Summaries are generated and may contain mistakes; the official description above is the record.