# CVE-2018-18819: Missing authorization in n/a

> Insufficient access controls in the web conference chat allow attackers to create unauthorized sessions and execute arbitrary commands.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Nov 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-m8mf-8j96-ph83

## What is CVE-2018-18819?

CVE-2018-18819 is a medium-severity missing authorization vulnerability in n/a, published on 12 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the web conference chat component of MiCollab, versions 7.3 PR6 (7.3.0.601) and earlier, and 8.0 (8.0.0.40) through 8.0 SP2 FP2 (8.0.2.202), and MiVoice Business Express versions 7.3 PR3 (7.3.1.302) and earlier, and 8.0 (8.0.0.40) through 8.0 SP2 FP1 (8.0.2.202), could allow creation of unauthorized chat sessions, due to insufficient access controls. A successful exploit could allow execution of arbitrary commands.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2018-18819?

It affects 2 products.


Products: Mitel Micollab, Mitel Mivoice Business Express.

## How do I fix CVE-2018-18819?

No fix has been published for CVE-2018-18819 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-18819 being exploited?

There is no known exploitation of CVE-2018-18819 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-26143](https://insights.sbomify.com/CVE-2022-26143/): MiCollab, MiVoice Business Express Access Control (critical 9.8, exploited in the wild)
- [CVE-2024-41713](https://insights.sbomify.com/CVE-2024-41713/): Mitel MiCollab Path Traversal (critical 9.1, exploited in the wild)
- [CVE-2024-55550](https://insights.sbomify.com/CVE-2024-55550/): Mitel MiCollab Path Traversal (medium 4.4, exploited in the wild)
- [CVE-2024-35285](https://insights.sbomify.com/CVE-2024-35285/): Command injection in n/a (critical 9.8)
- [CVE-2024-35286](https://insights.sbomify.com/CVE-2024-35286/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-18819 and fix it if it is affected.

What it is: CVE-2018-18819 is a medium-severity missing authorization vulnerability in n/a, published on 12 Nov 2019. 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-2018-18819 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-2018-18819/ (Markdown: https://insights.sbomify.com/CVE-2018-18819/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-18819
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-18819
- OSV: https://osv.dev/vulnerability/CVE-2018-18819

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-18819/
Summaries are generated and may contain mistakes; the official description above is the record.