{"id":"CVE-2023-42799","aliases":["EUVD-2023-47226","GHSA-r8cf-45f4-vf8m"],"status":"published","title":"Buffer overflow due to use of `strcpy` in `parseUrlAddrFromRtspUrlString`","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.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01881,"percentile":0.7964,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2023-12-14T16:47:00Z","modified":"2026-11-09T02:45:39Z","products":[{"vendor":"moonlight-stream","product":"moonlight"},{"vendor":"moonlight-stream","product":"moonlight-common-c"},{"vendor":"moonlight-stream","product":"moonlight_embedded"},{"vendor":"moonlight-stream","product":"moonlight_switch"},{"vendor":"moonlight-stream","product":"moonlight_tv"},{"vendor":"moonlight-stream","product":"moonlight_vita"},{"vendor":"moonlight-stream","product":"moonlight_xbox"}],"references":[{"url":"https://github.com/moonlight-stream/moonlight-common-c/security/advisories/GHSA-r8cf-45f4-vf8m","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Third Party Advisory","advisory"]},{"url":"https://github.com/moonlight-stream/moonlight-common-c/commit/02b7742f4d19631024bd766bd2bb76715780004e","tags":["x_refsource_MISC","x_transferred","Patch","fix"]},{"url":"https://github.com/moonlight-stream/moonlight-common-c/commit/50c0a51b10ecc5b3415ea78c21d96d679e2288f9","tags":["x_refsource_MISC","x_transferred","Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/42xxx/CVE-2023-42799.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-42799","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-42799","title":"Buffer overflow due to use of `strcpy` in `parseUrlAddrFromRtspUrlString`","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.","status":"published","published":"2023-12-14T16:47:00.932Z","modified":"2024-10-08T14:20:49.115Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:35:18.16233Z"}],"euvd":[{"id":"EUVD-2023-47226","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.","status":"published","published":"2023-12-14T16:47:00Z","modified":"2024-10-08T14:20:49Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:27:45.808193Z"}],"nvd":[{"id":"CVE-2023-42799","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.","status":"published","published":"2023-12-14T17:15:07.257Z","modified":"2026-06-17T06:24:32.183Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:08:54.696438Z"}],"osv":[{"id":"CVE-2023-42799","title":"Buffer overflow due to use of `strcpy` in `parseUrlAddrFromRtspUrlString`","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.","status":"published","published":"2023-12-14T16:47:00.932Z","modified":"2026-11-09T13:13:29.474152261Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-120"],"updated_at":"2026-11-09T03:16:26.778234Z"}]}}