# CVE-2007-2165: Auth bypass in n/a

> Remote attackers can bypass authentication in ProFTPD when multiple modules are configured, potentially gaining unauthorized access to the system.

- **Severity:** Medium 5.1 (`AV:N/AC:H/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:** 22 Apr 2007
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2007-2165, GHSA-5xmx-5p6r-vfrv

## What is CVE-2007-2165?

CVE-2007-2165 is a medium-severity authentication bypass vulnerability in n/a, published on 22 Apr 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Auth API in ProFTPD before 20070417, when multiple simultaneous authentication modules are configured, does not require that the module that checks authentication is the same as the module that retrieves authentication data, which might allow remote attackers to bypass authentication, as demonstrated by use of SQLAuthTypes Plaintext in mod_sql, with data retrieved from /etc/passwd.

## Which versions are affected by CVE-2007-2165?

It affects 1 product.


Products: Proftpd Project Proftpd.

## How do I fix CVE-2007-2165?

Upgrade to a fixed version.

## Is CVE-2007-2165 being exploited?

There is no known exploitation of CVE-2007-2165 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2006-5815](https://insights.sbomify.com/CVE-2006-5815/): Memory corruption in n/a (critical 10.0)
- [CVE-2003-0500](https://insights.sbomify.com/CVE-2003-0500/): SQL injection in n/a (critical 10.0)
- [CVE-1999-0911](https://insights.sbomify.com/CVE-1999-0911/): Memory corruption in n/a (critical 10.0)
- [CVE-2003-0831](https://insights.sbomify.com/CVE-2003-0831/): Memory corruption in n/a (critical 9.0)
- [CVE-2009-0542](https://insights.sbomify.com/CVE-2009-0542/): SQL injection in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-2165 and fix it if it is affected.

What it is: CVE-2007-2165 is a medium-severity authentication bypass vulnerability in n/a, published on 22 Apr 2007. 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-2007-2165 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-2007-2165/ (Markdown: https://insights.sbomify.com/CVE-2007-2165/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-2165
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-2165
- OSV: https://osv.dev/vulnerability/CVE-2007-2165

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-2165/
Summaries are generated and may contain mistakes; the official description above is the record.