# CVE-2007-0004: Security feature bypass in n/a

> Local attackers can bypass NFS permission checks when using the noacl mount option, potentially reading sensitive file permission information from the server.

- **Severity:** Low 1.9 (`AV:L/AC:M/Au:N/C:P/I:N/A:N`)
- **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:** 18 Sep 2007
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-2p32-7jx3-9vw2

## What is CVE-2007-0004?

CVE-2007-0004 is a low-severity vulnerability in Redhat Enterprise Linux, published on 18 Sep 2007. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The NFS client implementation in the kernel in Red Hat Enterprise Linux (RHEL) 3, when a filesystem is mounted with the noacl option, checks permissions for the open system call via vfs_permission (mode bits) data rather than an NFS ACCESS call to the server, which allows local client processes to obtain a false success status from open calls that the server would deny, and possibly obtain sensitive information about file permissions on the server, as demonstrated in a root_squash environment.  NOTE: it is uncertain whether any scenarios involving this issue cross privilege boundaries.

Weakness: CWE-264

## Which versions are affected by CVE-2007-0004?

It affects 1 product.


Products: Redhat Enterprise Linux.

## How do I fix CVE-2007-0004?

No fix has been published for CVE-2007-0004 yet. Limit exposure of the affected software until one is available.

## Is CVE-2007-0004 being exploited?

There is no known exploitation of CVE-2007-0004 in the wild and no public exploit code.

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- [CVE-2018-14667](https://insights.sbomify.com/CVE-2018-14667/): Red Hat JBoss RichFaces Framework Expression Language Injection (critical 9.8, exploited in the wild)
- [CVE-2021-20325](https://insights.sbomify.com/CVE-2021-20325/): Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit (critical 9.8)
- [CVE-2018-25011](https://insights.sbomify.com/CVE-2018-25011/): Memory corruption in libwebp (critical 9.8)
- [CVE-2018-25014](https://insights.sbomify.com/CVE-2018-25014/): Other in libwebp (critical 9.8)
- [CVE-2014-3585](https://insights.sbomify.com/CVE-2014-3585/): Supply chain in redhat-upgrade-tool (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-0004 and fix it if it is affected.

What it is: CVE-2007-0004 is a low-severity vulnerability in Redhat Enterprise Linux, published on 18 Sep 2007. 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-2007-0004 in the wild and no public exploit code.

Affected product: Redhat Enterprise Linux. 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-2007-0004/ (Markdown: https://insights.sbomify.com/CVE-2007-0004/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-0004
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-0004
- OSV: https://osv.dev/vulnerability/CVE-2007-0004

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-0004/
Summaries are generated and may contain mistakes; the official description above is the record.