# CVE-2018-19784: Weak Cryptography in PHP-Proxy

> Weak cryptography in PHP-Proxy allows attackers to calculate authorization data, facilitating local file inclusion attacks.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Dec 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-4wgf-9x5r-p938

## What is CVE-2018-19784?

CVE-2018-19784 is a high-severity vulnerability in n/a, published on 1 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The str_rot_pass function in vendor/atholn1600/php-proxy/src/helpers.php in PHP-Proxy 5.1.0 uses weak cryptography, which makes it easier for attackers to calculate the authorization data needed for local file inclusion.

Weakness: CWE-326 (Inadequate Encryption Strength)

## Which versions are affected by CVE-2018-19784?

2 open source packages ship an affected version, including athlon1600/php-proxy. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `athlon1600/php-proxy` | Packagist | All versions to 5.1.0 | None |
| `athlon1600/php-proxy` | Packagist | All versions to 5.1.0 | None |

Products: Php-Proxy Php-Proxy.

## How do I fix CVE-2018-19784?

No fix has been published for CVE-2018-19784 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-19784 being exploited?

There is no known exploitation of CVE-2018-19784 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-19458](https://insights.sbomify.com/CVE-2018-19458/): Unauthenticated File Read in PHP Proxy (high 7.5)
- [CVE-2018-19246](https://insights.sbomify.com/CVE-2018-19246/): LFI in PHP-Proxy 5.1.0 (high 7.5)
- [CVE-2018-19785](https://insights.sbomify.com/CVE-2018-19785/): XSS in PHP-Proxy-App through v3.0 (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-19784 and fix it if it is affected.

What it is: CVE-2018-19784 is a high-severity vulnerability in n/a, published on 1 Dec 2018. 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-2018-19784 in the wild and no public exploit code.

Affected packages and fixed versions:
- athlon1600/php-proxy (Packagist): affected all versions up to 5.1.0; no fix listed
- athlon1600/php-proxy (Packagist): affected all versions up to 5.1.0; no fix listed

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-2018-19784/ (Markdown: https://insights.sbomify.com/CVE-2018-19784/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-19784
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-19784
- OSV: https://osv.dev/vulnerability/CVE-2018-19784

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-19784/
Summaries are generated and may contain mistakes; the official description above is the record.