# CVE-2019-11270: UAA clients.write vulnerability

> A malicious client with write authority can bypass restrictions to create other clients with arbitrary, unauthorized scopes in Cloud Foundry UAA.

- **Severity:** High 7.3 (`CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 5 Aug 2019
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-cgmm-ggpv-874w

## What is CVE-2019-11270?

CVE-2019-11270 is a high-severity vulnerability in Cloud Foundry UAA Release (OSS), published on 5 Aug 2019. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Cloud Foundry UAA versions prior to v73.4.0 contain a vulnerability where a malicious client possessing the 'clients.write' authority or scope can bypass the restrictions imposed on clients created via 'clients.write' and create clients with arbitrary scopes that the creator does not possess.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource), CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2019-11270?

It affects 3 products.


Products: Pivotal Software Application Service, Pivotal Software Cloud Foundry Uaa, Pivotal Software Operations Manager.

## How do I fix CVE-2019-11270?

No fix has been published for CVE-2019-11270 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-11270 being exploited?

There is no known exploitation of CVE-2019-11270 in the wild and no public exploit code.

## Other vulnerabilities in Cloud Foundry UAA Release (OSS)

- [CVE-2019-3793](https://insights.sbomify.com/CVE-2019-3793/): Invitations Service supports HTTP connections (high 8.1)
- [CVE-2019-3777](https://insights.sbomify.com/CVE-2019-3777/): Apps Manager unverified SSL certs in Cloud Controller proxy (high 8.0)
- [CVE-2019-11276](https://insights.sbomify.com/CVE-2019-11276/): Apps Manager sends tokens to Spring apps via HTTP (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-11270 and fix it if it is affected.

What it is: CVE-2019-11270 is a high-severity vulnerability in Cloud Foundry UAA Release (OSS), published on 5 Aug 2019. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-11270 in the wild and no public exploit code.

Affected product: Cloud Foundry UAA Release (OSS). 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-2019-11270/ (Markdown: https://insights.sbomify.com/CVE-2019-11270/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-11270
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-11270
- OSV: https://osv.dev/vulnerability/CVE-2019-11270

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-11270/
Summaries are generated and may contain mistakes; the official description above is the record.