# CVE-2017-3191: Auth bypass in DIR-130

> Remote attackers can bypass authentication on D-Link DIR-130 and DIR-330 routers to access administrator-only pages without credentials.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Dec 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-5cj6-x2gg-fq5g

## What is CVE-2017-3191?

CVE-2017-3191 is a critical authentication bypass vulnerability in D-Link DIR-130, published on 15 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

D-Link DIR-130 firmware version 1.23 and DIR-330 firmware version 1.12 are vulnerable to authentication bypass of the remote login page. A remote attacker that can access the remote management login page can manipulate the POST request in such a manner as to access some administrator-only pages such as tools_admin.asp without credentials.

Weakness: CWE-20 (Improper Input Validation), CWE-294 (Authentication Bypass by Capture-replay)

## Which versions are affected by CVE-2017-3191?

It affects 2 products.


Products: D-Link Dir-130 Firmware, D-Link Dir-330 Firmware.

## How do I fix CVE-2017-3191?

No fix has been published for CVE-2017-3191 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-3191 being exploited?

There is no known exploitation of CVE-2017-3191 in the wild and no public exploit code.

## Other vulnerabilities in D-Link DIR-130

- [CVE-2017-3192](https://insights.sbomify.com/CVE-2017-3192/): Information disclosure in DIR-130 (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-3191 and fix it if it is affected.

What it is: CVE-2017-3191 is a critical authentication bypass vulnerability in D-Link DIR-130, published on 15 Dec 2017. 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-2017-3191 in the wild and no public exploit code.

Affected product: D-Link DIR-130. 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-2017-3191/ (Markdown: https://insights.sbomify.com/CVE-2017-3191/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-3191
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-3191
- OSV: https://osv.dev/vulnerability/CVE-2017-3191

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-3191/
Summaries are generated and may contain mistakes; the official description above is the record.