# CVE-2019-13464: File upload in n/a

> Attackers can bypass PHP script upload restrictions in ModSecurity CRS by using X.Filename instead of X_Filename, potentially leading to code execution.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 9 Jul 2019
- **Updated:** 4 Aug 2024
- **Also known as:** AZL-44598, DEBIAN-CVE-2019-13464, GHSA-9qm4-xr26-w9h5, UBUNTU-CVE-2019-13464

## What is CVE-2019-13464?

CVE-2019-13464 is a high-severity vulnerability in n/a, published on 9 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) 3.0.2. Use of X.Filename instead of X_Filename can bypass some PHP Script Uploads rules, because PHP automatically transforms dots into underscores in certain contexts where dots are invalid.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2019-13464?

It affects 1 product.


Products: Modsecurity Owasp Modsecurity Core Rule Set.

## How do I fix CVE-2019-13464?

Apply the vendor's patch.

## Is CVE-2019-13464 being exploited?

There is no known exploitation of CVE-2019-13464 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2019-11387](https://insights.sbomify.com/CVE-2019-11387/): Denial of service in n/a (medium 5.3)
- [CVE-2019-11388](https://insights.sbomify.com/CVE-2019-11388/): Denial of service in n/a (medium 5.3)
- [CVE-2019-11389](https://insights.sbomify.com/CVE-2019-11389/): Denial of service in n/a (medium 5.3)
- [CVE-2019-11390](https://insights.sbomify.com/CVE-2019-11390/): Denial of service in n/a (medium 5.3)
- [CVE-2019-11391](https://insights.sbomify.com/CVE-2019-11391/): Denial of service in n/a (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-13464 and fix it if it is affected.

What it is: CVE-2019-13464 is a high-severity vulnerability in n/a, published on 9 Jul 2019. 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-2019-13464 in the wild and no public exploit code.

Affected product: n/a. 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-2019-13464/ (Markdown: https://insights.sbomify.com/CVE-2019-13464/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-13464
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-13464
- OSV: https://osv.dev/vulnerability/CVE-2019-13464

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-13464/
Summaries are generated and may contain mistakes; the official description above is the record.