CVE-2023-42800
8.8 · HIGHOverview
CVE-2023-42800 is a high-severity vulnerability affecting moonlight-stream moonlight-common-c. It was published on December 14, 2023 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Moonlight-common-c contains the core GameStream client code shared between Moonlight clients. Moonlight-common-c is vulnerable to buffer overflow starting in commit 50c0a51b10ecc5b3415ea78c21d96d679e2288f9 due to unmitigated usage of unsafe C functions and improper bounds checking. A malicious game streaming server could exploit a buffer overflow vulnerability to crash a moonlight client, or achieve remote code execution (RCE) on the client (with insufficient exploit mitigations or if mitigations can be bypassed). The bug was addressed in commit 24750d4b748fefa03d09fcfd6d45056faca354e0.
Remediation
Check the references section for vendor advisories and patches from moonlight-stream. Update moonlight-common-c to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| moonlight-stream | moonlight-common-c | >= 2022-11-04, < 2023-10-06 | Affected |
| moonlight-stream | moonlight | 8.4.0 | Affected |
| moonlight-stream | moonlight_xbox | 1.12.0 | Affected |
| moonlight-stream | moonlight_tv | 1.5.4 | Affected |
| moonlight-stream | moonlight_switch | 0.13 | Affected |
| moonlight-stream | moonlight_vita | 0.9.2 | Affected |
References
Frequently Asked Questions
What is CVE-2023-42800?
CVE-2023-42800 is a high-severity vulnerability affecting moonlight-stream moonlight-common-c. It was published on December 14, 2023 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2023-42800?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-42800?
Check the references section for vendor advisories and patches from moonlight-stream. Update moonlight-common-c to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-42800?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-42800 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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