# CVE-2018-8342: Memory corruption in Windows 7

> An attacker can exploit a buffer overflow in the Windows NDIS driver to gain elevated privileges on affected systems.

- **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:** 15 Aug 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-x42x-mfx7-r4ph

## What is CVE-2018-8342?

CVE-2018-8342 is a high-severity memory corruption vulnerability in Microsoft Windows 7, published on 15 Aug 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An elevation of privilege vulnerability exists in the Network Driver Interface Specification (NDIS) when ndis.sys fails to check the length of a buffer prior to copying memory to it, aka "Windows NDIS Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2008 R2. This CVE ID is unique from CVE-2018-8343.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2018-8342?

It affects 2 products.


Products: Microsoft Windows 7, Microsoft Windows Server 2008.

## How do I fix CVE-2018-8342?

No fix has been published for CVE-2018-8342 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-8342 being exploited?

There is no known exploitation of CVE-2018-8342 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 7

- [CVE-2015-1635](https://insights.sbomify.com/CVE-2015-1635/): Microsoft HTTP.sys Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2015-2360](https://insights.sbomify.com/CVE-2015-2360/): Microsoft Win32k Privilege Escalation (high 8.8, exploited in the wild)
- [CVE-2014-6324](https://insights.sbomify.com/CVE-2014-6324/): Microsoft Kerberos Key Distribution Center (KDC) Privilege Escalation (high 8.8, exploited in the wild)
- [CVE-2014-6332](https://insights.sbomify.com/CVE-2014-6332/): Microsoft Windows Object Linking & Embedding (OLE) Automation Array Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2014-4148](https://insights.sbomify.com/CVE-2014-4148/): Microsoft Windows Remote Code Execution (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-8342 and fix it if it is affected.

What it is: CVE-2018-8342 is a high-severity memory corruption vulnerability in Microsoft Windows 7, published on 15 Aug 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-2018-8342 in the wild and no public exploit code.

Affected product: Microsoft Windows 7. 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-2018-8342/ (Markdown: https://insights.sbomify.com/CVE-2018-8342/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-8342
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-8342
- OSV: https://osv.dev/vulnerability/CVE-2018-8342

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-8342/
Summaries are generated and may contain mistakes; the official description above is the record.