# CVE-2019-5643: C4G BLIS Improper Access Control

> Unauthenticated attackers can enumerate user names and facility names in C4G BLIS, exposing sensitive organizational data.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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:** 6 Nov 2019
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-xm3p-h74w-hwrq

## What is CVE-2019-5643?

CVE-2019-5643 is a medium-severity vulnerability in Computing For Good Basic Laboratory Information System, published on 6 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Computing For Good's Basic Laboratory Information System (also known as C4G BLIS) version 3.5 and earlier suffers from an instance of CWE-284, "Improper Access Control." As a result, an unauthenticated user may enumerate the user names and facility names in use on a particular installation.

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2019-5643?

It affects 1 product.


Products: Gatech Computing for Good\'s Basic Laboratory Information System.

## How do I fix CVE-2019-5643?

No fix has been published for CVE-2019-5643 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-5643 being exploited?

There is no known exploitation of CVE-2019-5643 in the wild and no public exploit code.

## Other vulnerabilities in Computing For Good Basic Laboratory Information System

- [CVE-2019-5617](https://insights.sbomify.com/CVE-2019-5617/): C4G BLIS Improper Access Control (critical 10.0)
- [CVE-2019-5644](https://insights.sbomify.com/CVE-2019-5644/): C4G BLIS Improper Access Control (critical 10.0)
- [CVE-2019-25678](https://insights.sbomify.com/CVE-2019-25678/): C4G BLIS 3.4 SQL Injection via users_select.php (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-5643 and fix it if it is affected.

What it is: CVE-2019-5643 is a medium-severity vulnerability in Computing For Good Basic Laboratory Information System, published on 6 Nov 2019. 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-2019-5643 in the wild and no public exploit code.

Affected product: Computing For Good Basic Laboratory Information System. 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-2019-5643/ (Markdown: https://insights.sbomify.com/CVE-2019-5643/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-5643
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-5643
- OSV: https://osv.dev/vulnerability/CVE-2019-5643

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-5643/
Summaries are generated and may contain mistakes; the official description above is the record.