# CVE-2004-0935: Security feature bypass in n/a

> Remote attackers can bypass antivirus protection by sending compressed files with zeroed headers, requiring user interaction to open the file.

- **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:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Nov 2004
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-j2fx-58w3-67xc

## What is CVE-2004-0935?

CVE-2004-0935 is a high-severity vulnerability in Gentoo Linux, published on 19 Nov 2004. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Eset Anti-Virus before 1.020 (16th September 2004) 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-2004-0935?

It affects 23 products.


Products: Archive Zip Archive Zip, 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 and 3 more.

## How do I fix CVE-2004-0935?

No fix has been published for CVE-2004-0935 yet. Limit exposure of the affected software until one is available.

## Is CVE-2004-0935 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-0935 exists.

Public exploit code:

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

## Other vulnerabilities in Gentoo Linux

- [CVE-2004-0932](https://insights.sbomify.com/CVE-2004-0932/): Security feature bypass in n/a (high 7.5)
- [CVE-2004-0933](https://insights.sbomify.com/CVE-2004-0933/): Security feature bypass in n/a (high 7.5)
- [CVE-2004-0934](https://insights.sbomify.com/CVE-2004-0934/): Security feature bypass in n/a (high 7.5)
- [CVE-2004-0936](https://insights.sbomify.com/CVE-2004-0936/): Security feature bypass in n/a (high 7.5)
- [CVE-2004-0937](https://insights.sbomify.com/CVE-2004-0937/): Security feature bypass in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0935 and fix it if it is affected.

What it is: CVE-2004-0935 is a high-severity vulnerability in Gentoo Linux, published on 19 Nov 2004. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-0935 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-2004-0935/ (Markdown: https://insights.sbomify.com/CVE-2004-0935/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0935
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0935
- OSV: https://osv.dev/vulnerability/CVE-2004-0935

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0935/
Summaries are generated and may contain mistakes; the official description above is the record.