# CVE-2020-9759: webOS TV Emulator privilege escalation vulnerability

> An attacker can escalate privileges and overwrite files in the LG webOS TV Emulator by exploiting incorrect environment settings via crafted configuration files.

- **Severity:** Medium 4.6 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 23 Mar 2020
- **Updated:** 17 Sep 2024
- **Also known as:** DEBIAN-CVE-2020-9759, GHSA-j24f-gw9v-x4vp, UBUNTU-CVE-2020-9759

## What is CVE-2020-9759?

CVE-2020-9759 is a medium-severity vulnerability in n/a, published on 23 Mar 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration files and executable files.

Weakness: CWE-494 (Download of Code Without Integrity Check)

## Which versions are affected by CVE-2020-9759?

It affects 1 product.


Products: Lg Webos.

## How do I fix CVE-2020-9759?

Apply the vendor's patch.

## Is CVE-2020-9759 being exploited?

There is no known exploitation of CVE-2020-9759 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-23730](https://insights.sbomify.com/CVE-2022-23730/): Auth bypass in LG webOS TV (critical 9.8)
- [CVE-2023-6318](https://insights.sbomify.com/CVE-2023-6318/): Command injection in the processAnalyticsReport method from the com.webos.service.cloudupload service (critical 9.1)
- [CVE-2023-6319](https://insights.sbomify.com/CVE-2023-6319/): Command injection in the getAudioMetadata method from the com.webos.service.attachedstoragemanager service (critical 9.1)
- [CVE-2023-6320](https://insights.sbomify.com/CVE-2023-6320/): Command injection in the com.webos.service.connectionmanager/tv/setVlanStaticAddress endpoint (critical 9.1)
- [CVE-2022-23731](https://insights.sbomify.com/CVE-2022-23731/): Privilege escalation in LG webOS TV (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9759 and fix it if it is affected.

What it is: CVE-2020-9759 is a medium-severity vulnerability in n/a, published on 23 Mar 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-9759 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-2020-9759/ (Markdown: https://insights.sbomify.com/CVE-2020-9759/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9759
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9759
- OSV: https://osv.dev/vulnerability/CVE-2020-9759

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-9759/
Summaries are generated and may contain mistakes; the official description above is the record.