# CVE-2021-45821: SQL injection in n/a

> A registered user can exploit blind SQL injection to extract sensitive data or achieve remote code execution on the Xbtit web server.

- **Severity:** High 8.8 (`CVSS:3.1/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:** 16 Mar 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-69rw-gr4q-mrm6

## What is CVE-2021-45821?

CVE-2021-45821 is a high-severity SQL injection vulnerability in n/a, published on 16 Mar 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A blind SQL injection vulnerability exists in Xbtit 3.1 via the sid parameter in ajaxchat/getHistoryChatData.php file that is accessible by a registered user. As a result, a malicious user can extract sensitive data such as usernames and passwords and in some cases use this vulnerability in order to get a remote code execution on the remote web server.

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

## Which versions are affected by CVE-2021-45821?

It affects 1 product.


Products: Btiteam Xbtit.

## How do I fix CVE-2021-45821?

No fix has been published for CVE-2021-45821 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-45821 being exploited?

There is no known exploitation of CVE-2021-45821 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-15680](https://insights.sbomify.com/CVE-2018-15680/): Weak cryptography in n/a (critical 9.8)
- [CVE-2018-15681](https://insights.sbomify.com/CVE-2018-15681/): Weak cryptography in n/a (critical 9.8)
- [CVE-2018-15682](https://insights.sbomify.com/CVE-2018-15682/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2021-45822](https://insights.sbomify.com/CVE-2021-45822/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2018-17870](https://insights.sbomify.com/CVE-2018-17870/): Open redirect in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-45821 and fix it if it is affected.

What it is: CVE-2021-45821 is a high-severity SQL injection vulnerability in n/a, published on 16 Mar 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-45821 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-2021-45821/ (Markdown: https://insights.sbomify.com/CVE-2021-45821/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-45821
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-45821
- OSV: https://osv.dev/vulnerability/CVE-2021-45821

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-45821/
Summaries are generated and may contain mistakes; the official description above is the record.