# CVE-2017-7405: Auth bypass in n/a

> Authenticated users are identified by IP address, allowing attackers to hijack admin sessions via IP spoofing without credentials.

- **Severity:** Critical 9.8 (`CVSS:3.1/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:** 7 Jul 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-xpmv-q85x-8hh8

## What is CVE-2017-7405?

CVE-2017-7405 is a critical authentication bypass vulnerability in n/a, published on 7 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

On the D-Link DIR-615 before v20.12PTb04, once authenticated, this device identifies the user based on the IP address of his machine. By spoofing the IP address belonging to the victim's host, an attacker might be able to take over the administrative session without being prompted for authentication credentials. An attacker can get the victim's and router's IP addresses by simply sniffing the network traffic. Moreover, if the victim has web access enabled on his router and is accessing the web interface from a different network that is behind the NAT/Proxy, an attacker can sniff the network traffic to know the public IP address of the victim's router and take over his session as he won't be prompted for credentials.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2017-7405?

It affects 1 product.


Products: Dlink Dir-615.

## How do I fix CVE-2017-7405?

No fix has been published for CVE-2017-7405 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-7405 being exploited?

There is no known exploitation of CVE-2017-7405 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-11436](https://insights.sbomify.com/CVE-2017-11436/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2017-7406](https://insights.sbomify.com/CVE-2017-7406/): Weak cryptography in n/a (critical 9.8)
- [CVE-2017-7404](https://insights.sbomify.com/CVE-2017-7404/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2009-4821](https://insights.sbomify.com/CVE-2009-4821/): Auth bypass in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7405 and fix it if it is affected.

What it is: CVE-2017-7405 is a critical authentication bypass vulnerability in n/a, published on 7 Jul 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-2017-7405 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-2017-7405/ (Markdown: https://insights.sbomify.com/CVE-2017-7405/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7405
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7405
- OSV: https://osv.dev/vulnerability/CVE-2017-7405

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-7405/
Summaries are generated and may contain mistakes; the official description above is the record.