# CVE-2013-6403: Auth bypass in n/a

> Remote attackers can bypass access restrictions on the ownCloud admin page, potentially gaining unauthorized administrative access.

- **Severity:** Medium 6.8 (`AV:N/AC:M/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:** 24 Dec 2013
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-c97p-wf7p-5c6r, MGASA-2013-0367

## What is CVE-2013-6403?

CVE-2013-6403 is a medium-severity authentication bypass vulnerability in Owncloud Owncloud, published on 24 Dec 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The admin page in ownCloud before 5.0.13 allows remote attackers to bypass intended access restrictions via unspecified vectors, related to MariaDB.

Weakness: CWE-264

## Which versions are affected by CVE-2013-6403?

It affects 2 products.


Products: Owncloud Owncloud, Owncloud Owncloud Server.

## How do I fix CVE-2013-6403?

Upgrade to a fixed version.

## Is CVE-2013-6403 being exploited?

There is no known exploitation of CVE-2013-6403 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-2013-6403 and fix it if it is affected.

What it is: CVE-2013-6403 is a medium-severity authentication bypass vulnerability in Owncloud Owncloud, published on 24 Dec 2013. 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-2013-6403 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-2013-6403/ (Markdown: https://insights.sbomify.com/CVE-2013-6403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-6403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-6403
- OSV: https://osv.dev/vulnerability/CVE-2013-6403

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-6403/
Summaries are generated and may contain mistakes; the official description above is the record.