# CVE-2024-20394: Denial of service in Cisco AppDynamics

> A local unauthenticated attacker can cause a denial of service by sending a crafted HTTP request to the Cisco AppDynamics Network Visibility Agent.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 May 2024
- **Updated:** 9 Aug 2024
- **Also known as:** GHSA-8mcf-fh2m-245p

## What is CVE-2024-20394?

CVE-2024-20394 is a medium-severity denial of service vulnerability in Cisco AppDynamics, published on 15 May 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A vulnerability in Cisco AppDynamics Network Visibility Agent could allow an unauthenticated, local attacker to cause a denial of service (DoS) condition on an affected device.

 This vulnerability is due to the inability to handle unexpected input. An attacker who has local device access could exploit this vulnerability by sending an HTTP request to the targeted service. A successful exploit could allow the attacker to cause a DoS condition by stopping the Network Agent Service on the local device.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2024-20394?

It affects 1 product.


Products: Cisco Appdynamics.

## How do I fix CVE-2024-20394?

No fix has been published for CVE-2024-20394 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-20394 being exploited?

There is no known exploitation of CVE-2024-20394 in the wild and no public exploit code.

## Other vulnerabilities in Cisco AppDynamics

- [CVE-2023-20274](https://insights.sbomify.com/CVE-2023-20274/): Privilege escalation in Cisco AppDynamics (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-20394 and fix it if it is affected.

What it is: CVE-2024-20394 is a medium-severity denial of service vulnerability in Cisco AppDynamics, published on 15 May 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-20394 in the wild and no public exploit code.

Affected product: Cisco AppDynamics. 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-2024-20394/ (Markdown: https://insights.sbomify.com/CVE-2024-20394/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-20394
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-20394
- OSV: https://osv.dev/vulnerability/CVE-2024-20394

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-20394/
Summaries are generated and may contain mistakes; the official description above is the record.