# CVE-2018-0014: ScreenOS: Etherleak vulnerability found on ScreenOS device

> Attackers can read fragments of system memory or previous packet data from unzeroed Ethernet packets on Juniper ScreenOS devices.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Jan 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-xgmx-gwqj-mmc5

## What is CVE-2018-0014?

CVE-2018-0014 is a medium-severity vulnerability in Juniper Networks ScreenOS, published on 10 Jan 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Juniper Networks ScreenOS devices do not pad Ethernet packets with zeros, and thus some packets can contain fragments of system memory or data from previous packets. This issue is often detected as CVE-2003-0001. The issue affects all versions of Juniper Networks ScreenOS prior to 6.3.0r25.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2018-0014?

It affects 1 product.


Products: Juniper Screenos.

## How do I fix CVE-2018-0014?

No fix has been published for CVE-2018-0014 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0014 being exploited?

There is no known exploitation of CVE-2018-0014 in the wild and no public exploit code.

## Other vulnerabilities in Juniper Networks ScreenOS

- [CVE-2015-7755](https://insights.sbomify.com/CVE-2015-7755/): Juniper ScreenOS Improper Authentication (critical 9.8, exploited in the wild)
- [CVE-2017-2336](https://insights.sbomify.com/CVE-2017-2336/): ScreenOS: XSS vulnerability in ScreenOS Firewall (critical 9.6)
- [CVE-2017-2335](https://insights.sbomify.com/CVE-2017-2335/): ScreenOS: XSS vulnerability in ScreenOS Firewall (high 8.4)
- [CVE-2017-2337](https://insights.sbomify.com/CVE-2017-2337/): ScreenOS: XSS vulnerability in ScreenOS Firewall (high 8.4)
- [CVE-2017-2338](https://insights.sbomify.com/CVE-2017-2338/): ScreenOS: XSS vulnerability in ScreenOS Firewall (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0014 and fix it if it is affected.

What it is: CVE-2018-0014 is a medium-severity vulnerability in Juniper Networks ScreenOS, published on 10 Jan 2018. 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-2018-0014 in the wild and no public exploit code.

Affected product: Juniper Networks ScreenOS. 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-2018-0014/ (Markdown: https://insights.sbomify.com/CVE-2018-0014/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0014
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0014
- OSV: https://osv.dev/vulnerability/CVE-2018-0014

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0014/
Summaries are generated and may contain mistakes; the official description above is the record.