# CVE-2021-21597: Information disclosure in Wyse ThinOS

> An authenticated attacker with physical access can read sensitive information from log files in Dell Wyse ThinOS.

- **Severity:** High 7.2 (`CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Aug 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-c5x3-p9mj-9gv6

## What is CVE-2021-21597?

CVE-2021-21597 is a high-severity vulnerability in Dell Wyse ThinOS, published on 10 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Dell Wyse ThinOS, version 9.0, contains a Sensitive Information Disclosure Vulnerability. An authenticated malicious user with physical access to the system could exploit this vulnerability to read sensitive information written to the log files.

Weakness: CWE-532 (Insertion of Sensitive Information into Log File)

## Which versions are affected by CVE-2021-21597?

It affects 1 product.


Products: Dell Wyse Thinos.

## How do I fix CVE-2021-21597?

No fix has been published for CVE-2021-21597 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-21597 being exploited?

There is no known exploitation of CVE-2021-21597 in the wild and no public exploit code.

## Other vulnerabilities in Dell Wyse ThinOS

- [CVE-2020-29491](https://insights.sbomify.com/CVE-2020-29491/): Misconfiguration in Wyse Proprietary OS (ThinOS) (critical 10.0)
- [CVE-2020-29492](https://insights.sbomify.com/CVE-2020-29492/): Misconfiguration in Wyse Proprietary OS (ThinOS) (critical 10.0)
- [CVE-2024-42427](https://insights.sbomify.com/CVE-2024-42427/): Command injection in Wyse Proprietary OS (Modern ThinOS) (high 7.6)
- [CVE-2022-34402](https://insights.sbomify.com/CVE-2022-34402/): Denial of service in Wyse Proprietary OS (Modern ThinOS) (medium 6.8)
- [CVE-2023-32446](https://insights.sbomify.com/CVE-2023-32446/): Information disclosure in Wyse Proprietary OS (Modern ThinOS) (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-21597 and fix it if it is affected.

What it is: CVE-2021-21597 is a high-severity vulnerability in Dell Wyse ThinOS, published on 10 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-21597 in the wild and no public exploit code.

Affected product: Dell Wyse ThinOS. 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-2021-21597/ (Markdown: https://insights.sbomify.com/CVE-2021-21597/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-21597
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-21597
- OSV: https://osv.dev/vulnerability/CVE-2021-21597

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-21597/
Summaries are generated and may contain mistakes; the official description above is the record.