# CVE-2023-32152: D-Link DIR-2640 HNAP LoginPassword Authentication Bypass Vulnerability

> Network-adjacent attackers can bypass authentication on D-Link DIR-2640 routers via a crafted HNAP login request, gaining unauthorized access to the management interface.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 May 2024
- **Updated:** 18 Sep 2024
- **Also known as:** GHSA-xq9g-8773-5hrq

## What is CVE-2023-32152?

CVE-2023-32152 is a medium-severity authentication bypass vulnerability in D-Link DIR-2640, published on 3 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

D-Link DIR-2640 HNAP LoginPassword Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-2640 routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the web management interface, which listens on TCP port 80 by default. A specially crafted login request can cause authentication to succeed without providing proper credentials. An attacker can leverage this vulnerability to bypass authentication on the system.
. Was ZDI-CAN-19549.

Weakness: CWE-303 (Incorrect Implementation of Authentication Algorithm)

## Which versions are affected by CVE-2023-32152?

It affects 1 product.


Products: Dlink Dir-2640 Firmware.

## How do I fix CVE-2023-32152?

No fix has been published for CVE-2023-32152 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-32152 being exploited?

There is no known exploitation of CVE-2023-32152 in the wild and no public exploit code.

## Other vulnerabilities in D-Link DIR-2640

- [CVE-2024-5293](https://insights.sbomify.com/CVE-2024-5293/): D-Link DIR-2640 HTTP Referer Stack-Based Buffer Overflow Remote Code Execution Vulnerability (high 8.8)
- [CVE-2023-32149](https://insights.sbomify.com/CVE-2023-32149/): D-Link DIR-2640 prog.cgi Request Handling Stack-based Buffer Overflow Remote Code Execution Vulnerability (high 8.8)
- [CVE-2023-32147](https://insights.sbomify.com/CVE-2023-32147/): D-Link DIR-2640 LocalIPAddress Command Injection Remote Code Execution Vulnerability (medium 6.8)
- [CVE-2023-32150](https://insights.sbomify.com/CVE-2023-32150/): D-Link DIR-2640 PrefixLen Command Injection Remote Code Execution Vulnerability (medium 6.8)
- [CVE-2023-32151](https://insights.sbomify.com/CVE-2023-32151/): D-Link DIR-2640 DestNetwork Command Injection Remote Code Execution Vulnerability (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-32152 and fix it if it is affected.

What it is: CVE-2023-32152 is a medium-severity authentication bypass vulnerability in D-Link DIR-2640, published on 3 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-32152 in the wild and no public exploit code.

Affected product: D-Link DIR-2640. 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-2023-32152/ (Markdown: https://insights.sbomify.com/CVE-2023-32152/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-32152
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-32152
- OSV: https://osv.dev/vulnerability/CVE-2023-32152

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-32152/
Summaries are generated and may contain mistakes; the official description above is the record.