# CVE-2015-4717: Denial of service in n/a

> Remote attackers can cause denial of service via infinite loops and log consumption by exploiting filename sanitization flaws in ownCloud Server.

- **Severity:** High 7.8 (`AV:N/AC:L/Au:N/C:N/I:N/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 21 Oct 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-f964-5xjr-pjjv

## What is CVE-2015-4717?

CVE-2015-4717 is a high-severity denial of service vulnerability in Owncloud Owncloud, published on 21 Oct 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The filename sanitization component in ownCloud Server before 6.0.8, 7.0.x before 7.0.6, and 8.0.x before 8.0.4 does not properly handle $_GET parameters cast by PHP to an array, which allows remote attackers to cause a denial of service (infinite loop and log file consumption) via crafted endpoint file names.

Weakness: CWE-399

## Which versions are affected by CVE-2015-4717?

It affects 2 products.


Products: Owncloud Owncloud, Owncloud Owncloud Server.

## How do I fix CVE-2015-4717?

Upgrade to a fixed version.

## Is CVE-2015-4717 being exploited?

There is no known exploitation of CVE-2015-4717 in the wild and no public exploit code.

## Other vulnerabilities in Owncloud Owncloud

- [CVE-2021-35946](https://insights.sbomify.com/CVE-2021-35946/): Privilege escalation in n/a (critical 9.8)
- [CVE-2014-2052](https://insights.sbomify.com/CVE-2014-2052/): XML external entity in n/a (critical 9.8)
- [CVE-2014-2048](https://insights.sbomify.com/CVE-2014-2048/): Auth bypass in n/a (critical 9.8)
- [CVE-2020-28645](https://insights.sbomify.com/CVE-2020-28645/): Path traversal in n/a (critical 9.1)
- [CVE-2015-4718](https://insights.sbomify.com/CVE-2015-4718/): Command injection in n/a (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-4717 and fix it if it is affected.

What it is: CVE-2015-4717 is a high-severity denial of service vulnerability in Owncloud Owncloud, published on 21 Oct 2015. 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-2015-4717 in the wild and no public exploit code.

Affected product: Owncloud Owncloud. 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-2015-4717/ (Markdown: https://insights.sbomify.com/CVE-2015-4717/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-4717
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-4717
- OSV: https://osv.dev/vulnerability/CVE-2015-4717

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-4717/
Summaries are generated and may contain mistakes; the official description above is the record.