# CVE-2018-18573: File upload in n/a

> Authenticated administrators can upload malicious .htaccess files to bypass restrictions and execute arbitrary PHP code on osCommerce installations.

- **Severity:** High 7.2 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Aug 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-r5xm-pjjm-47rm

## What is CVE-2018-18573?

CVE-2018-18573 is a high-severity vulnerability in Oscommerce Oscommerce, published on 22 Aug 2019. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

osCommerce 2.3.4.1 has an incomplete '.htaccess' for blacklist filtering in the "product" page. Remote authenticated administrators can upload new '.htaccess' files (e.g., omitting .php) and subsequently achieve arbitrary PHP code execution via a /catalog/admin/categories.php?cPath=&action=new_product URI.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2018-18573?

It affects 1 product.


Products: Oscommerce Oscommerce.

## How do I fix CVE-2018-18573?

No fix has been published for CVE-2018-18573 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-18573 being exploited?

There is no known exploitation of CVE-2018-18573 in the wild and no public exploit code.

## Other vulnerabilities in Oscommerce Oscommerce

- [CVE-2020-23360](https://insights.sbomify.com/CVE-2020-23360/): Auth bypass in n/a (critical 9.8)
- [CVE-2020-27976](https://insights.sbomify.com/CVE-2020-27976/): Command injection in n/a (critical 9.8)
- [CVE-2019-25495](https://insights.sbomify.com/CVE-2019-25495/): osCommerce 2.3.4.1 SQL Injection via reviews_id Parameter (high 8.8)
- [CVE-2019-25496](https://insights.sbomify.com/CVE-2019-25496/): osCommerce 2.3.4.1 SQL Injection via products_id Parameter (high 8.8)
- [CVE-2019-25497](https://insights.sbomify.com/CVE-2019-25497/): osCommerce 2.3.4.1 SQL Injection via currency Parameter (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-18573 and fix it if it is affected.

What it is: CVE-2018-18573 is a high-severity vulnerability in Oscommerce Oscommerce, published on 22 Aug 2019. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-18573 in the wild and no public exploit code.

Affected product: Oscommerce Oscommerce. 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-2018-18573/ (Markdown: https://insights.sbomify.com/CVE-2018-18573/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-18573
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-18573
- OSV: https://osv.dev/vulnerability/CVE-2018-18573

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-18573/
Summaries are generated and may contain mistakes; the official description above is the record.