# CVE-2019-1878: Cisco TelePresence Endpoint Command Shell Injection Vulnerability

> An unauthenticated adjacent attacker can execute arbitrary shell commands on Cisco TelePresence endpoints by sending crafted CDP packets.

- **Severity:** High 7.5 (`CVSS:3.0/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Jun 2019
- **Updated:** 20 Nov 2024
- **Also known as:** GHSA-fmx5-8rj6-q372

## What is CVE-2019-1878?

CVE-2019-1878 is a high-severity command injection vulnerability in Cisco TelePresence TC Software, published on 20 Jun 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in the Cisco Discovery Protocol (CDP) implementation for the Cisco TelePresence Codec (TC) and Collaboration Endpoint (CE) Software could allow an unauthenticated, adjacent attacker to inject arbitrary shell commands that are executed by the device. The vulnerability is due to insufficient input validation of received CDP packets. An attacker could exploit this vulnerability by sending crafted CDP packets to an affected device. A successful exploit could allow the attacker to execute arbitrary shell commands or scripts on the targeted device.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2019-1878?

It affects 2 products.


Products: Cisco Telepresence Ce, Cisco Telepresence Tc.

## How do I fix CVE-2019-1878?

No fix has been published for CVE-2019-1878 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1878 being exploited?

There is no known exploitation of CVE-2019-1878 in the wild and no public exploit code.

## Other vulnerabilities in Cisco TelePresence TC Software

- [CVE-2017-3825](https://insights.sbomify.com/CVE-2017-3825/): Denial of service in Cisco TelePresence (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1878 and fix it if it is affected.

What it is: CVE-2019-1878 is a high-severity command injection vulnerability in Cisco TelePresence TC Software, published on 20 Jun 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-2019-1878 in the wild and no public exploit code.

Affected product: Cisco TelePresence TC Software. 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-2019-1878/ (Markdown: https://insights.sbomify.com/CVE-2019-1878/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1878
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1878
- OSV: https://osv.dev/vulnerability/CVE-2019-1878

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-1878/
Summaries are generated and may contain mistakes; the official description above is the record.