# CVE-2018-0437: Cisco Umbrella Enterprise Roaming Client and Enterprise Roaming Module Privilege Escalation Vulnerability

> Local authenticated attackers can elevate privileges to Administrator by placing executables in restricted directories due to improper file system permissions.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Oct 2018
- **Updated:** 26 Nov 2024
- **Also known as:** GHSA-3qw3-rvqg-98qf

## What is CVE-2018-0437?

CVE-2018-0437 is a high-severity vulnerability in Cisco Umbrella, published on 5 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in the Cisco Umbrella Enterprise Roaming Client (ERC) could allow an authenticated, local attacker to elevate privileges to Administrator. To exploit the vulnerability, the attacker must authenticate with valid local user credentials. This vulnerability is due to improper implementation of file system permissions, which could allow non-administrative users to place files within restricted directories. An attacker could exploit this vulnerability by placing an executable file within the restricted directory, which when executed by the ERC client, would run with Administrator privileges.

Weakness: CWE-269 (Improper Privilege Management), CWE-264

## Which versions are affected by CVE-2018-0437?

It affects 2 products.


Products: Cisco Umbrella Enterprise Roaming Client, Cisco Umbrella Roaming Module.

## How do I fix CVE-2018-0437?

No fix has been published for CVE-2018-0437 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0437 being exploited?

There is no known exploitation of CVE-2018-0437 in the wild and no public exploit code.

Public exploit code:

- Cisco Umbrella Roaming Client 2.0.168 - Local Privilege Escalation (exploitdb)

## Other vulnerabilities in Cisco Umbrella

- [CVE-2018-0438](https://insights.sbomify.com/CVE-2018-0438/): Cisco Umbrella Enterprise Roaming Client Privilege Escalation Vulnerability (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0437 and fix it if it is affected.

What it is: CVE-2018-0437 is a high-severity vulnerability in Cisco Umbrella, published on 5 Oct 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-2018-0437 in the wild and no public exploit code.

Affected product: Cisco Umbrella. 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-2018-0437/ (Markdown: https://insights.sbomify.com/CVE-2018-0437/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0437
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0437
- OSV: https://osv.dev/vulnerability/CVE-2018-0437

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0437/
Summaries are generated and may contain mistakes; the official description above is the record.