CVE-2023-42800 : What You Need to Know

Moonlight-common-c is vulnerable to buffer overflow due to the use of

strcpy

in

performRtspHandshake

. This vulnerability could allow remote attackers to crash a moonlight client or achieve remote code execution with high impact on confidentiality, integrity, and availability.

Understanding CVE-2023-42800

This CVE describes a buffer overflow vulnerability in Moonlight-common-c, affecting versions starting from commit 50c0a51b10ecc5b3415ea78c21d96d679e2288f9 to commit 24750d4b748fefa03d09fcfd6d45056faca354e0.

What is CVE-2023-42800?

Moonlight-common-c contains core GameStream client code shared among Moonlight clients. The vulnerability arises from unmitigated use of unsafe C functions and inadequate bounds checking, leading to a buffer overflow vulnerability.

The Impact of CVE-2023-42800

The impact of this vulnerability is severe, with the potential for a malicious game streaming server to crash a moonlight client or execute remote code with high confidentiality, integrity, and availability impacts.

Technical Details of CVE-2023-42800

This section provides more detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability stems from a buffer overflow in Moonlight-common-c due to unsafe usage of C functions and improper bounds checking. It can lead to client crashes or remote code execution.

Affected Systems and Versions

Moonlight-common-c versions between commit 50c0a51b10ecc5b3415ea78c21d96d679e2288f9 and commit 24750d4b748fefa03d09fcfd6d45056faca354e0 are affected by this vulnerability.

Exploitation Mechanism

A malicious game streaming server can exploit the buffer overflow to compromise a moonlight client, leading to client crashes or potential remote code execution.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-42800, certain actions can be taken.

Immediate Steps to Take

Ensure that affected versions are not in use and consider updating to a patched version. Additionally, monitoring network traffic for any unusual activity may help detect potential exploitation attempts.

Long-Term Security Practices

Implement secure coding practices that include proper bounds checking and use of safe functions to prevent buffer overflows. Regular security assessments and code audits can help identify and address vulnerabilities in the early stages.

Patching and Updates

It is crucial to apply the necessary patches provided by Moonlight-stream to address the buffer overflow vulnerability. Stay informed about security advisories and update software promptly to ensure a secure environment.