{"id":"CVE-2023-43644","summary":"Improper authentication in the SOCKS5 inbound in sing-box","details":"Sing-box is an open source proxy system. Affected versions are subject to an authentication bypass when specially crafted requests are sent to sing-box. This affects all SOCKS5 inbounds with user authentication and an attacker may be able to bypass authentication. Users are advised to update to sing-box 1.4.4 or to 1.5.0-rc.4. Users unable to update should not expose the SOCKS5 inbound to insecure environments.","aliases":["GHSA-r5hm-mp3j-285g","GO-2023-2077"],"modified":"2026-04-15T04:43:25.399262Z","published":"2023-09-25T19:12:35.949Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43644.json","cwe_ids":["CWE-306"],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43644.json"},{"type":"ADVISORY","url":"https://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-43644"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sagernet/sing-box","events":[{"introduced":"406e089d13273d6d5fba45e4d4bcc4cb8a543708"},{"fixed":"f4fc7764087fb82463d3d5526d09481727352553"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-43644.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}