# CVE-2018-7218: Code injection in n/a

> Remote attackers can execute arbitrary code on Citrix NetScaler ADC and Gateway devices via the AppFirewall functionality.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 17 May 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-wqj6-wrmm-v5j3

## What is CVE-2018-7218?

CVE-2018-7218 is a critical code injection vulnerability in n/a, published on 17 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The AppFirewall functionality in Citrix NetScaler Application Delivery Controller and NetScaler Gateway 10.5 before Build 68.7, 11.0 before Build 71.24, 11.1 before Build 58.13, and 12.0 before Build 57.24 allows remote attackers to execute arbitrary code via unspecified vectors.

## Which versions are affected by CVE-2018-7218?

It affects 2 products.


Products: Citrix Application Delivery Controller Firmware, Citrix Netscaler Gateway Firmware.

## How do I fix CVE-2018-7218?

No fix has been published for CVE-2018-7218 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-7218 being exploited?

There is no known exploitation of CVE-2018-7218 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-27518](https://insights.sbomify.com/CVE-2022-27518/): Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-19781](https://insights.sbomify.com/CVE-2019-19781/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution (critical 9.8, exploited in the wild)
- [CVE-2020-8193](https://insights.sbomify.com/CVE-2020-8193/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass (medium 6.5, exploited in the wild)
- [CVE-2020-8195](https://insights.sbomify.com/CVE-2020-8195/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure (medium 6.5, exploited in the wild)
- [CVE-2020-8196](https://insights.sbomify.com/CVE-2020-8196/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure (medium 4.3, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-7218 and fix it if it is affected.

What it is: CVE-2018-7218 is a critical code injection vulnerability in n/a, published on 17 May 2018. 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-2018-7218 in the wild and no public exploit code.

Affected product: n/a. 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-2018-7218/ (Markdown: https://insights.sbomify.com/CVE-2018-7218/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7218
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7218
- OSV: https://osv.dev/vulnerability/CVE-2018-7218

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-7218/
Summaries are generated and may contain mistakes; the official description above is the record.