# CVE-2018-15446: Cisco Meeting Server Information Disclosure Vulnerability

> Unauthenticated attackers can retrieve meeting room identifiers when Guest access is in Legacy mode, potentially enabling further attacks.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:** 8 Nov 2018
- **Updated:** 26 Nov 2024
- **Also known as:** GHSA-42c2-rg6h-pxvc

## What is CVE-2018-15446?

CVE-2018-15446 is a medium-severity vulnerability in Cisco Meeting Server, published on 8 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in Cisco Meeting Server could allow an unauthenticated, remote attacker to gain access to sensitive information. The vulnerability is due to improper protections on data that is returned from user meeting requests when the Guest access via ID and passcode option is set to Legacy mode. An attacker could exploit this vulnerability by sending meeting requests to an affected system. A successful exploit could allow the attacker to determine the values of meeting room unique identifiers, possibly allowing the attacker to conduct further exploits.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2018-15446?

It affects 1 product.


Products: Cisco Meeting Server.

## How do I fix CVE-2018-15446?

No fix has been published for CVE-2018-15446 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-15446 being exploited?

There is no known exploitation of CVE-2018-15446 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Meeting Server

- [CVE-2016-6448](https://insights.sbomify.com/CVE-2016-6448/): Memory corruption in Cisco Meeting Server before 2.0.3 and Acano Server before 1.9.5 (critical 9.8)
- [CVE-2017-12249](https://insights.sbomify.com/CVE-2017-12249/): Misconfiguration in Cisco Meeting Server (critical 9.1)
- [CVE-2016-6445](https://insights.sbomify.com/CVE-2016-6445/): Auth bypass in Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6 (critical 9.1)
- [CVE-2018-0439](https://insights.sbomify.com/CVE-2018-0439/): Cisco Meeting Server Cross-Site Request Forgery Vulnerability (high 8.8)
- [CVE-2016-6444](https://insights.sbomify.com/CVE-2016-6444/): Cross-site request forgery in Cisco Meeting Server 1.8, 1.9, 2.0 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-15446 and fix it if it is affected.

What it is: CVE-2018-15446 is a medium-severity vulnerability in Cisco Meeting Server, published on 8 Nov 2018. 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-2018-15446 in the wild and no public exploit code.

Affected product: Cisco Meeting Server. 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-2018-15446/ (Markdown: https://insights.sbomify.com/CVE-2018-15446/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-15446
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-15446
- OSV: https://osv.dev/vulnerability/CVE-2018-15446

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-15446/
Summaries are generated and may contain mistakes; the official description above is the record.