# CVE-2018-11142: Auth bypass in n/a

> An anonymous attacker can bypass localhost restrictions via HTTP headers to execute critical functions on the KACE appliance.

- **Severity:** Medium 5.5 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:** 31 May 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-2qcm-cv9r-3v6h

## What is CVE-2018-11142?

CVE-2018-11142 is a medium-severity authentication bypass vulnerability in n/a, published on 31 May 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The 'systemui/settings_network.php' and 'systemui/settings_patching.php' scripts in the Quest KACE System Management Appliance 8.0.318 are accessible only from localhost. This restriction can be bypassed by modifying the 'Host' and 'X_Forwarded_For' HTTP headers in a POST request. An anonymous user can abuse this vulnerability to execute critical functions without authorization.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2018-11142?

It affects 1 product.


Products: Quest Kace System Management Appliance.

## How do I fix CVE-2018-11142?

No fix has been published for CVE-2018-11142 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-11142 being exploited?

There is no known exploitation of CVE-2018-11142 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-11138](https://insights.sbomify.com/CVE-2018-11138/): Quest KACE System Management Appliance Remote Command Execution (critical 9.8, exploited in the wild)
- [CVE-2018-11136](https://insights.sbomify.com/CVE-2018-11136/): SQL injection in n/a (critical 9.8)
- [CVE-2018-11140](https://insights.sbomify.com/CVE-2018-11140/): SQL injection in n/a (critical 9.8)
- [CVE-2018-11141](https://insights.sbomify.com/CVE-2018-11141/): Path traversal in n/a (critical 9.8)
- [CVE-2018-11132](https://insights.sbomify.com/CVE-2018-11132/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-11142 and fix it if it is affected.

What it is: CVE-2018-11142 is a medium-severity authentication bypass vulnerability in n/a, published on 31 May 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-2018-11142 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-2018-11142/ (Markdown: https://insights.sbomify.com/CVE-2018-11142/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-11142
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-11142
- OSV: https://osv.dev/vulnerability/CVE-2018-11142

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-11142/
Summaries are generated and may contain mistakes; the official description above is the record.