# CVE-2017-6711: Auth bypass in Cisco Ultra Services Framework

> Unauthenticated remote attackers can access ZooKeeper data nodes and influence system behavior due to insecure default configurations in Cisco Ultra Services Framework.

- **Severity:** Critical 9.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 6 Jul 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-6rjw-8mv2-7m5v

## What is CVE-2017-6711?

CVE-2017-6711 is a critical authentication bypass vulnerability in Cisco Ultra Services Framework, published on 6 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the Ultra Automation Service (UAS) of the Cisco Ultra Services Framework could allow an unauthenticated, remote attacker to gain unauthorized access to a targeted device. The vulnerability is due to an insecure default configuration of the Apache ZooKeeper service used by the affected software. An attacker could exploit this vulnerability by accessing the affected device through the orchestrator network. An exploit could allow the attacker to gain access to ZooKeeper data nodes (znodes) and influence the behavior of the system's high-availability feature. This vulnerability affects all releases of Cisco Ultra Services Framework UAS prior to Releases 5.0.3 and 5.1. Cisco Bug IDs: CSCvd29395.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2017-6711?

It affects 1 product.


Products: Cisco Ultra Services Framework.

## How do I fix CVE-2017-6711?

No fix has been published for CVE-2017-6711 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-6711 being exploited?

There is no known exploitation of CVE-2017-6711 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Ultra Services Framework

- [CVE-2017-6708](https://insights.sbomify.com/CVE-2017-6708/): Path traversal in Cisco Ultra Services Framework (critical 9.8)
- [CVE-2017-6709](https://insights.sbomify.com/CVE-2017-6709/): Information disclosure in Cisco Ultra Services Framework (critical 9.8)
- [CVE-2017-6771](https://insights.sbomify.com/CVE-2017-6771/): Information disclosure in Ultra Services Framework (high 7.5)
- [CVE-2017-6680](https://insights.sbomify.com/CVE-2017-6680/): Path traversal in Cisco Ultra Services Framework (high 7.5)
- [CVE-2017-6681](https://insights.sbomify.com/CVE-2017-6681/): Path traversal in Cisco Ultra Services Framework (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-6711 and fix it if it is affected.

What it is: CVE-2017-6711 is a critical authentication bypass vulnerability in Cisco Ultra Services Framework, published on 6 Jul 2017. 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-2017-6711 in the wild and no public exploit code.

Affected product: Cisco Ultra Services Framework. 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-2017-6711/ (Markdown: https://insights.sbomify.com/CVE-2017-6711/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-6711
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-6711
- OSV: https://osv.dev/vulnerability/CVE-2017-6711

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-6711/
Summaries are generated and may contain mistakes; the official description above is the record.