# CVE-2017-9442: File upload in n/a

> Authenticated users can execute arbitrary code by uploading a malicious package containing a PHP web shell in BigTree CMS.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jun 2017
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-p7mq-8f2g-rj56

## What is CVE-2017-9442?

CVE-2017-9442 is a high-severity vulnerability in n/a, published on 5 Jun 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

BigTree CMS through 4.2.18 allows remote authenticated users to execute arbitrary code by uploading a crafted package containing a PHP web shell, related to extraction of a ZIP archive to filename patterns such as cache/package/xxx/yyy.php. This issue exists in core\admin\modules\developer\extensions\install\unpack.php and core\admin\modules\developer\packages\install\unpack.php. NOTE: the vendor states "You must implicitly trust any package or extension you install as they all have the ability to write PHP files.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2017-9442?

It affects 1 product.


Products: Bigtreecms Bigtree Cms.

## How do I fix CVE-2017-9442?

No fix has been published for CVE-2017-9442 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-9442 being exploited?

There is no known exploitation of CVE-2017-9442 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-10574](https://insights.sbomify.com/CVE-2018-10574/): File upload in n/a (critical 9.8)
- [CVE-2017-9364](https://insights.sbomify.com/CVE-2017-9364/): File upload in n/a (critical 9.8)
- [CVE-2017-7695](https://insights.sbomify.com/CVE-2017-7695/): File upload in n/a (critical 9.8)
- [CVE-2020-26668](https://insights.sbomify.com/CVE-2020-26668/): SQL injection in n/a (high 8.8)
- [CVE-2020-26670](https://insights.sbomify.com/CVE-2020-26670/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-9442 and fix it if it is affected.

What it is: CVE-2017-9442 is a high-severity vulnerability in n/a, published on 5 Jun 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-9442 in the wild and no public exploit code.

Affected product: n/a. 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-2017-9442/ (Markdown: https://insights.sbomify.com/CVE-2017-9442/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-9442
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-9442
- OSV: https://osv.dev/vulnerability/CVE-2017-9442

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-9442/
Summaries are generated and may contain mistakes; the official description above is the record.