# CVE-2019-3766: Auth bypass in Elastic Cloud Storage

> Unauthenticated attackers can brute-force passwords due to missing rate limits, potentially gaining unauthorized access to user accounts.

- **Severity:** High 8.1 (`CVSS:3.0/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Sep 2019
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-hrj4-7qhg-262m

## What is CVE-2019-3766?

CVE-2019-3766 is a high-severity authentication bypass vulnerability in Dell Elastic Cloud Storage, published on 27 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Dell EMC ECS versions prior to 3.4.0.0 contain an improper restriction of excessive authentication attempts vulnerability. An unauthenticated remote attacker may potentially perform a password brute-force attack to gain access to the targeted accounts.

Weakness: CWE-307 (Improper Restriction of Excessive Authentication Attempts)

## Which versions are affected by CVE-2019-3766?

It affects 1 product.


Products: Dell Emc Elastic Cloud Storage.

## How do I fix CVE-2019-3766?

No fix has been published for CVE-2019-3766 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-3766 being exploited?

There is no known exploitation of CVE-2019-3766 in the wild and no public exploit code.

## Other vulnerabilities in Dell Elastic Cloud Storage

- [CVE-2020-5386](https://insights.sbomify.com/CVE-2020-5386/): Information disclosure in Elastic Cloud Storage (high 8.1)
- [CVE-2020-5317](https://insights.sbomify.com/CVE-2020-5317/): Cross-site scripting in Elastic Cloud Storage (medium 6.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3766 and fix it if it is affected.

What it is: CVE-2019-3766 is a high-severity authentication bypass vulnerability in Dell Elastic Cloud Storage, published on 27 Sep 2019. 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-2019-3766 in the wild and no public exploit code.

Affected product: Dell Elastic Cloud Storage. 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-2019-3766/ (Markdown: https://insights.sbomify.com/CVE-2019-3766/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3766
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3766
- OSV: https://osv.dev/vulnerability/CVE-2019-3766

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-3766/
Summaries are generated and may contain mistakes; the official description above is the record.