# CVE-2020-3485: Cisco Vision Dynamic Signage Director Role-Based Access Control Vulnerability

> An authenticated attacker can bypass RBAC restrictions to view and delete unauthorized screen content in Cisco Vision Dynamic Signage Director.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Aug 2020
- **Updated:** 13 Nov 2024
- **Also known as:** GHSA-ccmf-v5qq-f4h8

## What is CVE-2020-3485?

CVE-2020-3485 is a medium-severity missing authorization vulnerability in Cisco Vision Dynamic Signage Director, published on 26 Aug 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in the role-based access control (RBAC) functionality of the web management software of Cisco Vision Dynamic Signage Director could allow an authenticated, remote attacker to access resources that they should not be able to access and perform actions that they should not be able to perform. The vulnerability exists because the web management software does not properly handle RBAC. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to view and delete certain screen content on the system that the attacker would not normally have privileges to access.

Weakness: CWE-276 (Incorrect Default Permissions), CWE-264

## Which versions are affected by CVE-2020-3485?

It affects 1 product.


Products: Cisco Vision Dynamic Signage Director.

## How do I fix CVE-2020-3485?

No fix has been published for CVE-2020-3485 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3485 being exploited?

There is no known exploitation of CVE-2020-3485 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Vision Dynamic Signage Director

- [CVE-2019-1917](https://insights.sbomify.com/CVE-2019-1917/): Cisco Vision Dynamic Signage Director REST API Authentication Bypass Vulnerability (critical 9.1)
- [CVE-2020-3598](https://insights.sbomify.com/CVE-2020-3598/): Cisco Vision Dynamic Signage Director Missing Authentication Vulnerability (medium 6.5)
- [CVE-2019-16004](https://insights.sbomify.com/CVE-2019-16004/): Cisco Vision Dynamic Signage Director Authentication Bypass Vulnerability (medium 6.5)
- [CVE-2021-34742](https://insights.sbomify.com/CVE-2021-34742/): Cisco Vision Dynamic Signage Director Reflected Cross-Site Scripting Vulnerability (medium 6.1)
- [CVE-2020-3491](https://insights.sbomify.com/CVE-2020-3491/): Cisco Vision Dynamic Signage Director Stored Cross-Site Scripting Vulnerability (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3485 and fix it if it is affected.

What it is: CVE-2020-3485 is a medium-severity missing authorization vulnerability in Cisco Vision Dynamic Signage Director, published on 26 Aug 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-3485 in the wild and no public exploit code.

Affected product: Cisco Vision Dynamic Signage Director. 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-2020-3485/ (Markdown: https://insights.sbomify.com/CVE-2020-3485/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3485
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3485
- OSV: https://osv.dev/vulnerability/CVE-2020-3485

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-3485/
Summaries are generated and may contain mistakes; the official description above is the record.