{"id":"CVE-2024-49363","summary":"Uncontrolled Recursion and Asymmetric Resource Consumption (Amplification) in media/file proxy in Misskey","details":"Misskey is an open source, federated social media platform. In affected versions FileServerService (media proxy) in github.com/misskey-dev/misskey 2024.10.1 or earlier did not detect proxy loops, which allows remote actors to execute a self-propagating reflected/amplified distributed denial-of-service via a maliciously crafted note. FileServerService.prototype.proxyHandler did not check incoming requests are not coming from another proxy server. An attacker can execute an amplified denial-of-service by sending a nested proxy request to the server and end the request with a malicious redirect back to another nested proxy request.\nLeading to unbounded recursion until the original request is timed out. This issue has been addressed in version 2024.11.0-alpha.3. Users are advised to upgrade. Users unable to upgrade may configure the reverse proxy to block requests to the proxy with an empty User-Agent header or one containing Misskey/. An attacker can not effectively modify the User-Agent header without making another request to the server.","aliases":["GHSA-gq5q-c77c-v236"],"modified":"2026-04-10T05:17:56.768215Z","published":"2024-12-18T19:24:34.399Z","database_specific":{"cwe_ids":["CWE-405","CWE-674"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49363.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49363.json"},{"type":"ADVISORY","url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-gq5q-c77c-v236"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49363"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/misskey-dev/misskey","events":[{"introduced":"0"},{"last_affected":"e55a254353b608795386ae5efe1104f1177e6fd6"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"\u003c CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H"}]}}],"versions":["0.0.5018","0.0.5023","0.0.5030","0.0.5042","0.0.5051","0.0.5064","0.0.5074","0.0.5089","1.0.0","1.1.0","1.2.0","1.3.0","1.4.0","1.5.0","1.6.0","1.7.0","2.0.0","2.1.1","2.1.2","2.1.3","2.1.4","2.10.0","2.10.1","2.11.0","2.12.0","2.13.0","2.14.0","2.15.0","2.16.0","2.16.1","2.16.2","2.16.3","2.16.4","2.16.5","2.16.6","2.16.7","2.16.8","2.17.0","2.18.0","2.18.2","2.19.0","2.2.0","2.20.0","2.20.1","2.21.0","2.21.1","2.22.0","2.22.1","2.22.2","2.22.3","2.23.0","2.24.0","2.24.1","2.24.2","2.25.1","2.25.2","2.27.3","2.29.0","2.29.1","2.3.0","2.3.1","2.30.0","2.30.1","2.31.0","2.32.0","2.33.0","2.33.1","2.34.0","2.34.1","2.34.3","2.35.1","2.35.2","2.35.3","2.36.1","2.37.1","2.37.2","2.37.3","2.37.4","2.37.5","2.37.6","2.37.7","2.38.2","2.38.3","2.4.0","2.40.0","2.40.1","2.41.1","2.42.0","2.5.0","2.6.2","2.7.1","2.9.0","2.9.1","3.0.1","3.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-49363.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H"}]}