# CVE-2017-1000247: CodeIgniter HTTP Header Injection

> Attackers can inject HTTP headers via the set_status_header function in CodeIgniter, potentially bypassing security controls or causing response splitting.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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:** Yes
- **Published:** 17 Nov 2017
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-j9f9-8j39-4g97

## What is CVE-2017-1000247?

CVE-2017-1000247 is a high-severity vulnerability in n/a, published on 17 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

British Columbia Institute of Technology CodeIgniter 3.1.3 is vulnerable to HTTP Header Injection in the set_status_header() common function under Apache resulting in HTTP Header Injection flaws.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2017-1000247?

2 open source packages ship an affected version, including codeigniter4/framework. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `codeigniter4/framework` | Packagist | From 3.1.3 | 3.1.4 |
| `codeigniter4/framework` | Packagist | From 3.1.3 | 3.1.4 |

Products: Codeigniter Codeigniter.

## How do I fix CVE-2017-1000247?

Upgrade codeigniter4/framework to 3.1.4 or later.

## Is CVE-2017-1000247 being exploited?

There is no known exploitation of CVE-2017-1000247 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2025-54418](https://insights.sbomify.com/CVE-2025-54418/): CodeIgniter4's ImageMagick Handler has Command Injection Vulnerability (critical 9.8)
- [CVE-2023-32692](https://insights.sbomify.com/CVE-2023-32692/): Remote Code Execution Vulnerability in Validation Placeholders (critical 9.8)
- [CVE-2022-40824](https://insights.sbomify.com/CVE-2022-40824/): SQL injection in n/a (critical 9.8)
- [CVE-2022-40825](https://insights.sbomify.com/CVE-2022-40825/): SQL injection in n/a (critical 9.8)
- [CVE-2022-40826](https://insights.sbomify.com/CVE-2022-40826/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-1000247 and fix it if it is affected.

What it is: CVE-2017-1000247 is a high-severity vulnerability in n/a, published on 17 Nov 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-2017-1000247 in the wild and no public exploit code.

Affected packages and fixed versions:
- codeigniter4/framework (Packagist): affected from 3.1.3; fixed in 3.1.4
- codeigniter4/framework (Packagist): affected from 3.1.3; fixed in 3.1.4

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-2017-1000247/ (Markdown: https://insights.sbomify.com/CVE-2017-1000247/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-1000247
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-1000247
- OSV: https://osv.dev/vulnerability/CVE-2017-1000247

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-1000247/
Summaries are generated and may contain mistakes; the official description above is the record.