# CVE-2016-1518: Missing authorization in n/a

> Man-in-the-middle attackers can spoof provisioning data by intercepting unencrypted HTTP configuration downloads, leading to data modification and information disclosure.

- **Severity:** High 8.1 (`CVSS:3.0/AV:N/AC:H/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:** 21 Apr 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-6536-qjrp-px99

## What is CVE-2016-1518?

CVE-2016-1518 is a high-severity missing authorization vulnerability in n/a, published on 21 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The auto-provisioning mechanism in the Grandstream Wave app 1.0.1.26 and earlier for Android and Grandstream Video IP phones allows man-in-the-middle attackers to spoof provisioning data and consequently modify device functionality, obtain sensitive information from system logs, and have unspecified other impact by leveraging failure to use an HTTPS session for downloading configuration files from http://fm.grandstream.com/gs/.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2016-1518?

It affects 1 product.


Products: Grandstream Wave.

## How do I fix CVE-2016-1518?

No fix has been published for CVE-2016-1518 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-1518 being exploited?

There is no known exploitation of CVE-2016-1518 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2016-1520](https://insights.sbomify.com/CVE-2016-1520/): Security feature bypass in n/a (high 7.8)
- [CVE-2016-1519](https://insights.sbomify.com/CVE-2016-1519/): Security feature bypass in n/a (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-1518 and fix it if it is affected.

What it is: CVE-2016-1518 is a high-severity missing authorization vulnerability in n/a, published on 21 Apr 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-2016-1518 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-2016-1518/ (Markdown: https://insights.sbomify.com/CVE-2016-1518/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-1518
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-1518
- OSV: https://osv.dev/vulnerability/CVE-2016-1518

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-1518/
Summaries are generated and may contain mistakes; the official description above is the record.