# CVE-2021-44164: Chain Sea Information Integration Co., Ltd ai chatbot system - Arbitrary File Upload

> Remote attackers can upload malicious scripts to execute arbitrary code or cause denial of service in the Chain Sea AI chatbot system.

- **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:** 20 Dec 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-pv5h-978v-cqvr

## What is CVE-2021-44164?

CVE-2021-44164 is a critical vulnerability in Chain Sea Information Integration Co., Ltd ai chatbot system, published on 20 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Chain Sea ai chatbot system’s file upload function has insufficient filtering for special characters in URLs, which allows a remote attacker to by-pass file type validation, upload malicious script and execute arbitrary code without authentication, in order to take control of the system or terminate service.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2021-44164?

It affects 1 product.


Products: Chinasea Qb Smart Service Robot.

## How do I fix CVE-2021-44164?

No fix has been published for CVE-2021-44164 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-44164 being exploited?

There is no known exploitation of CVE-2021-44164 in the wild and no public exploit code.

## Other vulnerabilities in Chain Sea Information Integration Co., Ltd ai chatbot system

- [CVE-2021-44162](https://insights.sbomify.com/CVE-2021-44162/): Chain Sea Information Integration Co., Ltd ai chatbot system - Path Traversal (high 7.5)
- [CVE-2021-44163](https://insights.sbomify.com/CVE-2021-44163/): Chain Sea Information Integration Co., Ltd ai chatbot system - Reflected XSS (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-44164 and fix it if it is affected.

What it is: CVE-2021-44164 is a critical vulnerability in Chain Sea Information Integration Co., Ltd ai chatbot system, published on 20 Dec 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-2021-44164 in the wild and no public exploit code.

Affected product: Chain Sea Information Integration Co., Ltd ai chatbot 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-2021-44164/ (Markdown: https://insights.sbomify.com/CVE-2021-44164/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-44164
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-44164
- OSV: https://osv.dev/vulnerability/CVE-2021-44164

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-44164/
Summaries are generated and may contain mistakes; the official description above is the record.