# CVE-2023-6317: PIN/prompt bypass on the secondscreen.gateway service allows access to the SSAP API without user interaction

> Attackers can bypass PIN prompts to create privileged accounts and access SSAP APIs on LG webOS TVs without user interaction.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/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:** 9 Apr 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-rm4x-93m8-4qcv

## What is CVE-2023-6317?

CVE-2023-6317 is a high-severity authentication bypass vulnerability in LG WebOS, published on 9 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A prompt bypass exists in the secondscreen.gateway service running on webOS version 4 through 7. An attacker can create a privileged account without asking the user for the security PIN. 

Full versions and TV models affected:

webOS 4.9.7 - 5.30.40 running on LG43UM7000PLA 
webOS 5.5.0 - 04.50.51 running on OLED55CXPUA 
webOS 6.3.3-442 (kisscurl-kinglake) - 03.36.50 running on OLED48C1PUB  
webOS 7.3.1-43 (mullet-mebin) - 03.33.85 running on OLED55A23LA

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2023-6317?

It affects 1 product.


Products: Lg Webos.

## How do I fix CVE-2023-6317?

No fix has been published for CVE-2023-6317 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-6317 being exploited?

There is no known exploitation of CVE-2023-6317 in the wild and no public exploit code.

## Other vulnerabilities in LG WebOS

- [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-2023-6317 and fix it if it is affected.

What it is: CVE-2023-6317 is a high-severity authentication bypass vulnerability in LG WebOS, published on 9 Apr 2024. 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-2023-6317 in the wild and no public exploit code.

Affected product: LG WebOS. 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-2023-6317/ (Markdown: https://insights.sbomify.com/CVE-2023-6317/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-6317
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6317
- OSV: https://osv.dev/vulnerability/CVE-2023-6317

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-6317/
Summaries are generated and may contain mistakes; the official description above is the record.