# CVE-2019-3785: Cloud Controller provides signed URL with write authorization to read only user

> Authenticated read-only users can obtain signed URLs granting write access to the bit-service, allowing unauthorized data modification.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Mar 2019
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-84j7-fm4m-279g

## What is CVE-2019-3785?

CVE-2019-3785 is a medium-severity vulnerability in Cloud Foundry CAPI, published on 13 Mar 2019. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Cloud Foundry Cloud Controller, versions prior to 1.78.0, contain an endpoint with improper authorization. A remote authenticated malicious user with read permissions can request package information and receive a signed bit-service url that grants the user write permissions to the bit-service.

Weakness: CWE-269 (Improper Privilege Management), CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2019-3785?

It affects 1 product.


Products: Cloudfoundry Capi-Release.

## How do I fix CVE-2019-3785?

No fix has been published for CVE-2019-3785 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-3785 being exploited?

There is no known exploitation of CVE-2019-3785 in the wild and no public exploit code.

## Other vulnerabilities in Cloud Foundry CAPI

- [CVE-2018-1195](https://insights.sbomify.com/CVE-2018-1195/): Auth bypass in Cloud Controller (high 8.8)
- [CVE-2020-5417](https://insights.sbomify.com/CVE-2020-5417/): Cloud Controller may allow developers to claim sensitive routes (high 8.5)
- [CVE-2023-20881](https://insights.sbomify.com/CVE-2023-20881/): Missing authorization in Cloud Controller API (high 8.1)
- [CVE-2018-1266](https://insights.sbomify.com/CVE-2018-1266/): Path traversal in n/a (high 8.1)
- [CVE-2020-5400](https://insights.sbomify.com/CVE-2020-5400/): Cloud Controller logs environment variables from app manifests (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3785 and fix it if it is affected.

What it is: CVE-2019-3785 is a medium-severity vulnerability in Cloud Foundry CAPI, published on 13 Mar 2019. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-3785 in the wild and no public exploit code.

Affected product: Cloud Foundry CAPI. 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-2019-3785/ (Markdown: https://insights.sbomify.com/CVE-2019-3785/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3785
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3785
- OSV: https://osv.dev/vulnerability/CVE-2019-3785

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-3785/
Summaries are generated and may contain mistakes; the official description above is the record.