# CVE-2017-7528: Other in Ansible Tower

> CRLF injection in Ansible Tower allows internal servers to deploy other systems via the X-Forwarded-For header, potentially leading to unauthorized control.

- **Severity:** Medium 5.2 (`CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Aug 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-qh6h-825q-q4mx

## What is CVE-2017-7528?

CVE-2017-7528 is a medium-severity vulnerability in Redhat Ansible Tower, published on 22 Aug 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Ansible Tower as shipped with Red Hat CloudForms Management Engine 5 is vulnerable to CRLF Injection. It was found that X-Forwarded-For header allows internal servers to deploy other systems (using callback).

Weakness: CWE-93 (Improper Neutralization of CRLF Sequences), CWE-113 (Improper Neutralization of CRLF Sequences in HTTP Headers)

## Which versions are affected by CVE-2017-7528?

It affects 2 products.


Products: Redhat Ansible Tower, Redhat Cloudforms Management Engine.

## How do I fix CVE-2017-7528?

No fix has been published for CVE-2017-7528 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-7528 being exploited?

There is no known exploitation of CVE-2017-7528 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Ansible Tower

- [CVE-2018-10884](https://insights.sbomify.com/CVE-2018-10884/): Cross-site request forgery in ansible-tower (high 8.8)
- [CVE-2018-1104](https://insights.sbomify.com/CVE-2018-1104/): Code injection in Ansible Tower (high 8.8)
- [CVE-2019-14890](https://insights.sbomify.com/CVE-2019-14890/): Information disclosure in Tower (high 8.4)
- [CVE-2017-12148](https://insights.sbomify.com/CVE-2017-12148/): Code injection in Ansible Tower (high 8.4)
- [CVE-2019-19340](https://insights.sbomify.com/CVE-2019-19340/): Misconfiguration in Tower (high 8.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7528 and fix it if it is affected.

What it is: CVE-2017-7528 is a medium-severity vulnerability in Redhat Ansible Tower, published on 22 Aug 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-7528 in the wild and no public exploit code.

Affected product: Redhat Ansible Tower. 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-2017-7528/ (Markdown: https://insights.sbomify.com/CVE-2017-7528/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7528
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7528
- OSV: https://osv.dev/vulnerability/CVE-2017-7528

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-7528/
Summaries are generated and may contain mistakes; the official description above is the record.