# CVE-2018-0269: Security feature bypass in Cisco DNA Center

> An overly permissive CORS policy in Cisco DNA Center allows attackers to bypass security controls and exfiltrate sensitive information via malicious links.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Apr 2018
- **Updated:** 29 Nov 2024
- **Also known as:** GHSA-66mm-frqr-r7x4

## What is CVE-2018-0269?

CVE-2018-0269 is a medium-severity vulnerability in Cisco DNA Center, published on 19 Apr 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A vulnerability in the web framework of the Cisco Digital Network Architecture Center (DNA Center) could allow an unauthenticated, remote attacker to communicate with the Kong API server without restriction. The vulnerability is due to an overly permissive Cross Origin Resource Sharing (CORS) policy. An attacker could exploit this vulnerability by convincing a user to follow a malicious link. An exploit could allow the attacker to communicate with the API and exfiltrate sensitive information. Cisco Bug IDs: CSCvh99208.

Weakness: CWE-863 (Incorrect Authorization), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2018-0269?

It affects 1 product.


Products: Cisco Digital Network Architecture Center.

## How do I fix CVE-2018-0269?

No fix has been published for CVE-2018-0269 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0269 being exploited?

There is no known exploitation of CVE-2018-0269 in the wild and no public exploit code.

## Other vulnerabilities in Cisco DNA Center

- [CVE-2018-0222](https://insights.sbomify.com/CVE-2018-0222/): Hardcoded credentials in Cisco Digital Network Architecture Center (critical 10.0)
- [CVE-2018-0268](https://insights.sbomify.com/CVE-2018-0268/): Misconfiguration in Cisco Digital Network Architecture Center (critical 10.0)
- [CVE-2018-0448](https://insights.sbomify.com/CVE-2018-0448/): Cisco Digital Network Architecture Center Authentication Bypass Vulnerability (critical 9.8)
- [CVE-2018-15386](https://insights.sbomify.com/CVE-2018-15386/): Cisco Digital Network Architecture Center Unauthenticated Access Vulnerability (critical 9.8)
- [CVE-2018-0271](https://insights.sbomify.com/CVE-2018-0271/): Auth bypass in Cisco Digital Network Architecture Center (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0269 and fix it if it is affected.

What it is: CVE-2018-0269 is a medium-severity vulnerability in Cisco DNA Center, published on 19 Apr 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-0269 in the wild and no public exploit code.

Affected product: Cisco DNA Center. 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-2018-0269/ (Markdown: https://insights.sbomify.com/CVE-2018-0269/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0269
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0269
- OSV: https://osv.dev/vulnerability/CVE-2018-0269

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-0269/
Summaries are generated and may contain mistakes; the official description above is the record.