Home/CVE/Moonlight-common-c contains the core GameStream client code shared between Moonlight clients. Moonlight-common-c is vuln
CVE

CVE-2023-42799

Moonlight-common-c contains the core GameStream client code shared between Moonlight clients. Moonlight-common-c is vuln

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.

HIGH · CVSS 8.8 EPSS 0.00533
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
▤

Affected Products & Versions

9
moonlight-stream moonlight-common-c>= 2022-11-04 and < 2023-10-06
moonlight-stream moonlight>= 8.4.0 and <= 8.5.0
moonlight-stream moonlight>= 10.10 and <= 11.0
moonlight-stream moonlightall versions
moonlight-stream moonlight embeddedall versions
moonlight-stream moonlight xbox>= 1.12.0 and <= 1.14.40
moonlight-stream moonlight tv>= 1.5.4 and <= 1.5.27
moonlight-stream moonlight switch>= 0.13 and <= 0.13.3
⚠

Public Exploits & PoCs

1
pocgithub.com · GHSA-r8cf-45f4-vf8mgithub.com
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Dec 2023 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/moonlight-stream/moonlight-common-c/commit/02b7742f4d19631024bd766bd2bb76715780004ePatch
https://github.com/moonlight-stream/moonlight-common-c/commit/50c0a51b10ecc5b3415ea78c21d96d679e2288f9Patch
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