# CVE-2018-1000028: Missing authorization in n/a

> Remote attackers can read or write unauthorized files via NFS when the server exports a filesystem with the rootsquash option enabled.

- **Severity:** High 7.4 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 9 Feb 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2018-1000028, GHSA-p7mv-684h-c4rx

## What is CVE-2018-1000028?

CVE-2018-1000028 is a high-severity missing authorization vulnerability in Linux kernel, published on 9 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Linux kernel version after commit bdcf0a423ea1 - 4.15-rc4+, 4.14.8+, 4.9.76+, 4.4.111+ contains a Incorrect Access Control vulnerability in NFS server (nfsd) that can result in remote users reading or writing files they should not be able to via NFS. This attack appear to be exploitable via NFS server must export a filesystem with the "rootsquash" options enabled. This vulnerability appears to have been fixed in after commit 1995266727fa.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2018-1000028?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2018-1000028?

Apply the vendor's patch.

## Is CVE-2018-1000028 being exploited?

There is no known exploitation of CVE-2018-1000028 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-1000028 and fix it if it is affected.

What it is: CVE-2018-1000028 is a high-severity missing authorization vulnerability in Linux kernel, published on 9 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-1000028 in the wild and no public exploit code.

Affected product: Linux kernel. 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-2018-1000028/ (Markdown: https://insights.sbomify.com/CVE-2018-1000028/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1000028
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1000028
- OSV: https://osv.dev/vulnerability/CVE-2018-1000028

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-1000028/
Summaries are generated and may contain mistakes; the official description above is the record.