# CVE-2006-7254: Denial of service in n/a

> Local users can cause a denial of service in the nscd daemon by exploiting unclosed client sockets in the GNU C Library.

- **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:** Yes
- **Published:** 10 Apr 2019
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2006-7254, GHSA-4678-ch99-9rjx

## What is CVE-2006-7254?

CVE-2006-7254 is a medium-severity denial of service vulnerability in Gnu Glibc, published on 10 Apr 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The nscd daemon in the GNU C Library (glibc) before version 2.5 does not close incoming client sockets if they cannot be handled by the daemon, allowing local users to carry out a denial of service attack on the daemon.

Weakness: CWE-19

## Which versions are affected by CVE-2006-7254?

It affects 1 product.


Products: Gnu Glibc.

## How do I fix CVE-2006-7254?

Upgrade to a fixed version.

## Is CVE-2006-7254 being exploited?

There is no known exploitation of CVE-2006-7254 in the wild and no public exploit code.

## Other vulnerabilities in Gnu Glibc

- [CVE-2026-5450](https://insights.sbomify.com/CVE-2026-5450/): scanf %mc off-by-one heap buffer overflow (critical 9.8)
- [CVE-2023-25139](https://insights.sbomify.com/CVE-2023-25139/): Memory corruption in n/a (critical 9.8)
- [CVE-1999-0199](https://insights.sbomify.com/CVE-1999-0199/): Other in n/a (critical 9.8)
- [CVE-2019-1010022](https://insights.sbomify.com/CVE-2019-1010022/): Security feature bypass in glibc (critical 9.8)
- [CVE-2005-3590](https://insights.sbomify.com/CVE-2005-3590/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-7254 and fix it if it is affected.

What it is: CVE-2006-7254 is a medium-severity denial of service vulnerability in Gnu Glibc, published on 10 Apr 2019. 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-2006-7254 in the wild and no public exploit code.

Affected product: Gnu Glibc. 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-2006-7254/ (Markdown: https://insights.sbomify.com/CVE-2006-7254/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-7254
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-7254
- OSV: https://osv.dev/vulnerability/CVE-2006-7254

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-7254/
Summaries are generated and may contain mistakes; the official description above is the record.