Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2023-42799— Buffer overflow due to use of `strcpy` in `parseUrlAddrFromRtspUrlString`

Quick assessment

Affected
moonlight-stream moonlight-common-c
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Moonlight-common-c是Moonlight客户端之间共享的核心 GameStream 客户端代码。 Moonlight-common-c 存在安全漏洞，该漏洞源于不正确的边界检查，容易受到缓冲区溢出的影响，攻击者可以实现远程代码执行(RCE)。

CVSS 8.8 · High EPSS 1.66% · P76

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2023-42799

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Buffer overflow due to use of `strcpy` in `parseUrlAddrFromRtspUrlString`
Source: CVE Program / CVE List V5
Vulnerability 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 02b7742f4d19631024bd766bd2bb76715780004e.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Moonlight-common-c 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Moonlight-common-c是Moonlight客户端之间共享的核心 GameStream 客户端代码。 Moonlight-common-c 存在安全漏洞，该漏洞源于不正确的边界检查，容易受到缓冲区溢出的影响，攻击者可以实现远程代码执行(RCE)。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
moonlight-stream moonlight-common-c >= 50c0a51b10ecc5b3415ea78c21d96d679e2288f9, < 02b7742f4d19631024bd766bd2bb76715780004e -

II. Public POCs for CVE-2023-42799

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 14468 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2023-42799

请登录查看更多情报信息。

Patches & Fixes for CVE-2023-42799 (2)

Vendor Advisories for CVE-2023-42799 (1)

Same Patch Batch · moonlight-stream · 2023-12-14 · 3 CVEs total

CVE-2023-42800 8.8 HIGH Buffer overflow due to use of `strcpy` in `performRtspHandshake`
CVE-2023-42801 7.6 HIGH Stack buffer overflow due to `strcpy` into fixed size buffer in `extractVersionQuadFromStr

IV. Related Vulnerabilities

Same product: moonlight-common-c
Same vendor: moonlight-stream
Same weakness: CWE-120

V. Comments for CVE-2023-42799

No comments yet

Leave a comment