# CVE-2017-0935: Privilege escalation in EdgeRouter X

> An attacker with operator access can escalate privileges to root on Ubiquiti EdgeRouter devices due to improper file system protection.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Mar 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-mmmp-3j92-hg56

## What is CVE-2017-0935?

CVE-2017-0935 is a high-severity vulnerability in Ubiquiti Networks EdgeRouter X, published on 22 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Ubiquiti Networks EdgeOS version 1.9.1.1 and prior suffer from an Improper Privilege Management vulnerability due to the lack of protection of the file system leading to sensitive information being exposed. An attacker with access to an operator (read-only) account could escalate privileges to admin (root) access in the system.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2017-0935?

It affects 1 product.


Products: Ui Edgeos.

## How do I fix CVE-2017-0935?

No fix has been published for CVE-2017-0935 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-0935 being exploited?

There is no known exploitation of CVE-2017-0935 in the wild and no public exploit code.

## Other vulnerabilities in Ubiquiti Networks EdgeRouter X

- [CVE-2018-5265](https://insights.sbomify.com/CVE-2018-5265/): Command injection in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-0935 and fix it if it is affected.

What it is: CVE-2017-0935 is a high-severity vulnerability in Ubiquiti Networks EdgeRouter X, published on 22 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-0935 in the wild and no public exploit code.

Affected product: Ubiquiti Networks EdgeRouter X. 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-2017-0935/ (Markdown: https://insights.sbomify.com/CVE-2017-0935/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-0935
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-0935
- OSV: https://osv.dev/vulnerability/CVE-2017-0935

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-0935/
Summaries are generated and may contain mistakes; the official description above is the record.