# CVE-2021-42665: SQL injection in n/a

> An SQL injection in the login form allows attackers to bypass authentication and access the Engineers Online Portal.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Nov 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-5vc7-wq49-64h9

## What is CVE-2021-42665?

CVE-2021-42665 is a critical SQL injection vulnerability in n/a, published on 5 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An SQL Injection vulnerability exists in Sourcecodester Engineers Online Portal in PHP via the login form inside of index.php, which can allow an attacker to bypass authentication.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2021-42665?

It affects 1 product.


Products: Engineers Online Portal Project Engineers Online Portal.

## How do I fix CVE-2021-42665?

No fix has been published for CVE-2021-42665 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-42665 being exploited?

There is no known exploitation of CVE-2021-42665 in the wild and no public exploit code.

Public exploit code:

- CVE-2021-42665 - SQL Injection authentication bypass vulnerability in the Engineers online portal system.  (github_poc): https://github.com/0xDeku/CVE-2021-42665

## Other vulnerabilities in n/a

- [CVE-2021-42668](https://insights.sbomify.com/CVE-2021-42668/): SQL injection in n/a (critical 9.8)
- [CVE-2021-42669](https://insights.sbomify.com/CVE-2021-42669/): File upload in n/a (critical 9.8)
- [CVE-2021-42670](https://insights.sbomify.com/CVE-2021-42670/): SQL injection in n/a (critical 9.8)
- [CVE-2021-43437](https://insights.sbomify.com/CVE-2021-43437/): Other in n/a (high 8.8)
- [CVE-2021-42666](https://insights.sbomify.com/CVE-2021-42666/): SQL injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-42665 and fix it if it is affected.

What it is: CVE-2021-42665 is a critical SQL injection vulnerability in n/a, published on 5 Nov 2021. 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-2021-42665 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-2021-42665/ (Markdown: https://insights.sbomify.com/CVE-2021-42665/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-42665
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-42665
- OSV: https://osv.dev/vulnerability/CVE-2021-42665

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-42665/
Summaries are generated and may contain mistakes; the official description above is the record.