# CVE-2019-19598: Auth bypass in n/a

> Attackers can bypass authentication on D-Link DAP-1860 devices by manipulating the HNAP_AUTH header timestamp, gaining administrator access.

- **Severity:** High 8.8 (`CVSS:3.1/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Dec 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-vh9x-535j-rc7j

## What is CVE-2019-19598?

CVE-2019-19598 is a high-severity authentication bypass vulnerability in n/a, published on 5 Dec 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

D-Link DAP-1860 devices before v1.04b03 Beta allow access to administrator functions without authentication via the HNAP_AUTH header timestamp value. In HTTP requests, part of the HNAP_AUTH header is the timestamp used to determine the time when the user sent the request. If this value is equal to the value stored in the device's /var/hnap/timestamp file, the request will pass the HNAP_AUTH check function.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2019-19598?

It affects 1 product.


Products: Dlink Dap-1860 Firmware.

## How do I fix CVE-2019-19598?

No fix has been published for CVE-2019-19598 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-19598 being exploited?

There is no known exploitation of CVE-2019-19598 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-45208](https://insights.sbomify.com/CVE-2023-45208/): Command injection in n/a (high 8.8)
- [CVE-2020-27864](https://insights.sbomify.com/CVE-2020-27864/): Command injection in DAP-1860 (high 8.8)
- [CVE-2020-27865](https://insights.sbomify.com/CVE-2020-27865/): Auth bypass in DAP-1860 (high 8.8)
- [CVE-2019-19597](https://insights.sbomify.com/CVE-2019-19597/): Command injection in n/a (high 8.8)
- [CVE-2020-15631](https://insights.sbomify.com/CVE-2020-15631/): Command injection in DAP-1860 (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-19598 and fix it if it is affected.

What it is: CVE-2019-19598 is a high-severity authentication bypass vulnerability in n/a, published on 5 Dec 2019. 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-2019-19598 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-2019-19598/ (Markdown: https://insights.sbomify.com/CVE-2019-19598/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-19598
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-19598
- OSV: https://osv.dev/vulnerability/CVE-2019-19598

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-19598/
Summaries are generated and may contain mistakes; the official description above is the record.