# CVE-2018-19941: Cleartext Storage of Sensitive Information in Cookies

> Attackers can access sensitive information stored in cleartext cookies on QNAP NAS devices using widely available tools.

- **Severity:** High 7.5 (`CVSS:3.1/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:** 31 Dec 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-vhv6-87pm-667v

## What is CVE-2018-19941?

CVE-2018-19941 is a high-severity vulnerability in Qnap Qts, published on 31 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been reported to affect QNAP NAS. If exploited, this vulnerability allows an attacker to access sensitive information stored in cleartext inside cookies via certain widely-available tools. QNAP have already fixed this vulnerability in the following versions: QTS 4.5.1.1456 build 20201015 (and later) QuTS hero h4.5.1.1472 build 20201031 (and later) QuTScloud c4.5.2.1379 build 20200730 (and later)

Weakness: CWE-312 (Cleartext Storage of Sensitive Information), CWE-315 (Cleartext Storage of Sensitive Information in a Cookie)

## Which versions are affected by CVE-2018-19941?

It affects 3 products.


Products: Qnap Qts, Qnap Quts Hero, Qnap Qutscloud.

## How do I fix CVE-2018-19941?

No fix has been published for CVE-2018-19941 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-19941 being exploited?

There is no known exploitation of CVE-2018-19941 in the wild and no public exploit code.

## Other vulnerabilities in Qnap Qts

- [CVE-2020-2509](https://insights.sbomify.com/CVE-2020-2509/): QNAP Network-Attached Storage (NAS) Command Injection (critical 9.8, exploited in the wild)
- [CVE-2018-19949](https://insights.sbomify.com/CVE-2018-19949/): QNAP NAS File Station Command Injection (critical 9.8, exploited in the wild)
- [CVE-2019-7193](https://insights.sbomify.com/CVE-2019-7193/): QNAP QTS Improper Input Validation (critical 9.8, exploited in the wild)
- [CVE-2018-19943](https://insights.sbomify.com/CVE-2018-19943/): QNAP NAS File Station Cross-Site Scripting (high 8.0, exploited in the wild)
- [CVE-2018-19953](https://insights.sbomify.com/CVE-2018-19953/): QNAP NAS File Station Cross-Site Scripting (medium 6.1, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-19941 and fix it if it is affected.

What it is: CVE-2018-19941 is a high-severity vulnerability in Qnap Qts, published on 31 Dec 2020. 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-2018-19941 in the wild and no public exploit code.

Affected product: Qnap Qts. 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-2018-19941/ (Markdown: https://insights.sbomify.com/CVE-2018-19941/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-19941
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-19941
- OSV: https://osv.dev/vulnerability/CVE-2018-19941

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-19941/
Summaries are generated and may contain mistakes; the official description above is the record.