# CVE-2004-1096: Security feature bypass in n/a

> Remote attackers can bypass antivirus protection by sending compressed files with zeroed headers, allowing malicious content to reach target systems.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/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:** 1 Dec 2004
- **Updated:** 8 Aug 2024
- **Also known as:** DEBIAN-CVE-2004-1096, GHSA-wf22-9wqx-hv9r

## What is CVE-2004-1096?

CVE-2004-1096 is a high-severity vulnerability in Gentoo Linux, published on 1 Dec 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Archive::Zip Perl module before 1.14, when used by antivirus programs such as amavisd-new, allows remote attackers to bypass antivirus protection via a compressed file with both local and global headers set to zero, which does not prevent the compressed file from being opened on a target system.

## Which versions are affected by CVE-2004-1096?

It affects 22 products.


Products: Broadcom Brightstor Arcserve Backup, Broadcom Etrust Antivirus, Broadcom Etrust Antivirus Gateway, Broadcom Etrust Ez Antivirus, Broadcom Etrust Ez Armor, Broadcom Etrust Intrusion Detection, Broadcom Etrust Secure Content Manager, Broadcom Inoculateit, Ca Etrust Antivirus, Ca Etrust Secure Content Manager, Eset Software Nod32 Antivirus, Gentoo Linux, Kaspersky Lab Kaspersky Anti-Virus, Mandrakesoft Mandrake Linux, Mcafee Antivirus Engine, Rav Antivirus Rav Antivirus Desktop, Rav Antivirus Rav Antivirus for File Servers, Rav Antivirus Rav Antivirus for Mail Servers, Sophos Sophos Anti-Virus, Sophos Sophos Puremessage Anti-Virus and 2 more.

## How do I fix CVE-2004-1096?

Upgrade to a fixed version.

## Is CVE-2004-1096 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-1096 exists.

Public exploit code:

- Multiple AntiVirus - '.zip' Detection Bypass (exploitdb)

## Other vulnerabilities in Gentoo Linux

- [CVE-2008-3175](https://insights.sbomify.com/CVE-2008-3175/): Integer overflow in n/a (critical 10.0)
- [CVE-2008-2241](https://insights.sbomify.com/CVE-2008-2241/): Path traversal in n/a (critical 10.0)
- [CVE-2007-5325](https://insights.sbomify.com/CVE-2007-5325/): Memory corruption in n/a (critical 10.0)
- [CVE-2007-5326](https://insights.sbomify.com/CVE-2007-5326/): Memory corruption in n/a (critical 10.0)
- [CVE-2007-5327](https://insights.sbomify.com/CVE-2007-5327/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-1096 and fix it if it is affected.

What it is: CVE-2004-1096 is a high-severity vulnerability in Gentoo Linux, published on 1 Dec 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-1096 exists.

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-2004-1096/ (Markdown: https://insights.sbomify.com/CVE-2004-1096/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-1096
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-1096
- OSV: https://osv.dev/vulnerability/CVE-2004-1096

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-1096/
Summaries are generated and may contain mistakes; the official description above is the record.