# CVE-2017-18014: Cross-site scripting in n/a

> Unauthenticated attackers can execute persistent XSS in the WAF log page to gain admin privileges and perform actions like creating users or enabling SSH.

- **Severity:** Medium 6.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 12 Jan 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-9x6w-27m6-6fwq

## What is CVE-2017-18014?

CVE-2017-18014 is a medium-severity cross-site scripting vulnerability in n/a, published on 12 Jan 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An NC-25986 issue was discovered in the Logging subsystem of Sophos XG Firewall with SFOS before 17.0.3 MR3. An unauthenticated user can trigger a persistent XSS vulnerability found in the WAF log page (Control Center -> Log Viewer -> in the filter option "Web Server Protection") in the webadmin interface, and execute any action available to the webadmin of the firewall (e.g., creating a new user, enabling SSH, or adding an SSH authorized key). The WAF log page will execute the "User-Agent" parameter in the HTTP POST request.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2017-18014?

It affects 1 product.


Products: Sophos Sfos.

## How do I fix CVE-2017-18014?

No fix has been published for CVE-2017-18014 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-18014 being exploited?

There is no known exploitation of CVE-2017-18014 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-12271](https://insights.sbomify.com/CVE-2020-12271/): Sophos SFOS SQL Injection (critical 10.0, exploited in the wild)
- [CVE-2022-1040](https://insights.sbomify.com/CVE-2022-1040/): Sophos Firewall Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-11503](https://insights.sbomify.com/CVE-2020-11503/): Memory corruption in n/a (critical 9.8)
- [CVE-2018-16116](https://insights.sbomify.com/CVE-2018-16116/): SQL injection in n/a (high 8.8)
- [CVE-2018-16117](https://insights.sbomify.com/CVE-2018-16117/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-18014 and fix it if it is affected.

What it is: CVE-2017-18014 is a medium-severity cross-site scripting vulnerability in n/a, published on 12 Jan 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-18014 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-2017-18014/ (Markdown: https://insights.sbomify.com/CVE-2017-18014/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-18014
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-18014
- OSV: https://osv.dev/vulnerability/CVE-2017-18014

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-18014/
Summaries are generated and may contain mistakes; the official description above is the record.