# CVE-2004-0079: Null dereference in n/a

> Remote attackers can crash OpenSSL via a crafted SSL/TLS handshake, causing denial of service.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Mar 2004
- **Updated:** 16 Jan 2025
- **Also known as:** DEBIAN-CVE-2004-0079, GHSA-xcj5-xcx2-vvvv

## What is CVE-2004-0079?

CVE-2004-0079 is a high-severity vulnerability in Apple Mac Os X, published on 18 Mar 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null dereference.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2004-0079?

It affects 66 products.


Products: 4d Webstar, Apple Mac Os X, Apple Mac Os X Server, Avaya Converged Communications Server, Avaya Intuity Audix, Avaya S8300, Avaya S8500, Avaya S8700, Avaya Sg200, Avaya Sg203, Avaya Sg208, Avaya Sg5, Avaya Vsu, Bluecoat Cacheos Ca Sa, Bluecoat Proxysg, Checkpoint Firewall-1, Checkpoint Provider-1, Checkpoint Vpn-1, Cisco Access Registrar, Cisco Application and Content Networking Software and 46 more.

## How do I fix CVE-2004-0079?

Upgrade to a fixed version.

## Is CVE-2004-0079 being exploited?

There is no known exploitation of CVE-2004-0079 in the wild and no public exploit code.

## Other vulnerabilities in Apple Mac Os X

- [CVE-2004-0695](https://insights.sbomify.com/CVE-2004-0695/): Memory corruption in n/a (high 7.5)
- [CVE-2005-3143](https://insights.sbomify.com/CVE-2005-3143/): Denial of service in n/a (medium 5.0)
- [CVE-2005-1507](https://insights.sbomify.com/CVE-2005-1507/): Memory corruption in n/a (medium 5.0)
- [CVE-2004-0696](https://insights.sbomify.com/CVE-2004-0696/): Path traversal in n/a (medium 5.0)
- [CVE-2004-0697](https://insights.sbomify.com/CVE-2004-0697/): Information disclosure in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0079 and fix it if it is affected.

What it is: CVE-2004-0079 is a high-severity vulnerability in Apple Mac Os X, published on 18 Mar 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-2004-0079 in the wild and no public exploit code.

Affected product: Apple Mac Os X. 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-2004-0079/ (Markdown: https://insights.sbomify.com/CVE-2004-0079/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0079
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0079
- OSV: https://osv.dev/vulnerability/CVE-2004-0079

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0079/
Summaries are generated and may contain mistakes; the official description above is the record.