# CVE-2004-0918: Denial of service in n/a

> Remote attackers can cause a denial of service in Squid Web Proxy Cache by sending malicious SNMP packets with negative length fields.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 21 Oct 2004
- **Updated:** 8 Aug 2024
- **Also known as:** DEBIAN-CVE-2004-0918, GHSA-jx7g-w69f-vmq6, RHSA-2004:591

## What is CVE-2004-0918?

CVE-2004-0918 is a medium-severity denial of service vulnerability in Gentoo Linux, published on 21 Oct 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The asn_parse_header function (asn1.c) in the SNMP module for Squid Web Proxy Cache before 2.4.STABLE7 allows remote attackers to cause a denial of service (server restart) via certain SNMP packets with negative length fields that trigger a memory allocation error.

Weakness: CWE-399

## Which versions are affected by CVE-2004-0918?

It affects 6 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `squid` | Red Hat:enterprise_linux:3::as | All versions | 7:2.5.STABLE3-6.3E.2 |
| `squid-debuginfo` | Red Hat:enterprise_linux:3::as | All versions | 7:2.5.STABLE3-6.3E.2 |
| `squid` | Red Hat:enterprise_linux:3::desktop | All versions | 7:2.5.STABLE3-6.3E.2 |
| `squid-debuginfo` | Red Hat:enterprise_linux:3::desktop | All versions | 7:2.5.STABLE3-6.3E.2 |
| `squid` | Red Hat:enterprise_linux:3::es | All versions | 7:2.5.STABLE3-6.3E.2 |
| `squid-debuginfo` | Red Hat:enterprise_linux:3::es | All versions | 7:2.5.STABLE3-6.3E.2 |
| `squid` | Red Hat:enterprise_linux:3::ws | All versions | 7:2.5.STABLE3-6.3E.2 |
| `squid-debuginfo` | Red Hat:enterprise_linux:3::ws | All versions | 7:2.5.STABLE3-6.3E.2 |

Products: Gentoo Linux, Openpkg Openpkg, Redhat Fedora Core, Squid Squid, Trustix Secure Linux, Ubuntu Ubuntu Linux.

## How do I fix CVE-2004-0918?

Upgrade to a fixed version.

## Is CVE-2004-0918 being exploited?

There is no known exploitation of CVE-2004-0918 in the wild and no public exploit code.

## Other vulnerabilities in Gentoo Linux

- [CVE-2004-0914](https://insights.sbomify.com/CVE-2004-0914/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-1037](https://insights.sbomify.com/CVE-2004-1037/): Command injection in n/a (critical 10.0)
- [CVE-2004-1034](https://insights.sbomify.com/CVE-2004-1034/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0891](https://insights.sbomify.com/CVE-2004-0891/): Memory corruption in n/a (critical 10.0)
- [CVE-2002-1337](https://insights.sbomify.com/CVE-2002-1337/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0918 and fix it if it is affected.

What it is: CVE-2004-0918 is a medium-severity denial of service vulnerability in Gentoo Linux, published on 21 Oct 2004. 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-2004-0918 in the wild and no public exploit code.

Affected product: Gentoo 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-2004-0918/ (Markdown: https://insights.sbomify.com/CVE-2004-0918/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0918
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0918
- OSV: https://osv.dev/vulnerability/CVE-2004-0918

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0918/
Summaries are generated and may contain mistakes; the official description above is the record.