Buffer overflow in Moonlight-Stream Moonlight
CVE-2023-42799
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.
Vulnerability class: Buffer Overflow
EPSS: 0.017 (74.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Moonlight-stream Moonlight — versions 0.10.22
- Moonlight-stream Moonlight-common-c — versions >= 50c0a51b10ecc5b3415ea78c21d96d679e2288f9, < 02b7742f4d19631024bd766bd2bb76715780004e
- Moonlight-stream Moonlight_embedded — versions 2.6.0
- Moonlight-stream Moonlight_switch
- Moonlight-stream Moonlight_tv
- Moonlight-stream Moonlight_vita
- Moonlight-stream Moonlight_xbox
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-42799?
- CVE-2023-42799 is a high-severity vulnerability in Moonlight-Stream Moonlight, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2023-12-14.
- How severe is CVE-2023-42799?
- High severity. CVSS v3 base score is 8.8 out of 10.