{"cve":"CVE-2022-47517","nvd":{"published":"2022-12-18T05:15:11.300","modified":"2026-06-17T05:13:48.170","status":"Modified","description":"An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.19. It allows remote attackers to cause a denial of service (daemon crash) via a crafted UDP message that causes a url_canonize2 heap-based buffer over-read because of an off-by-one error.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-193"],"references":["https://github.com/davehorton/sofia-sip/commit/22c1bd191f0acbf11f0c0fbea1845d9bf9dcd47e","https://github.com/davehorton/sofia-sip/commit/bfc79d85c8f3a4798a3305fb98f5a11c11d0d29f","https://github.com/drachtio/drachtio-server/issues/243","https://github.com/davehorton/sofia-sip/commit/22c1bd191f0acbf11f0c0fbea1845d9bf9dcd47e","https://github.com/davehorton/sofia-sip/commit/bfc79d85c8f3a4798a3305fb98f5a11c11d0d29f"],"products":["drachtio:drachtio-server"],"source":"nvd","synced_at":"2026-10-19T21:37:31.370122805+00:00"},"epss":{"cve":"CVE-2022-47517","score":0.01562,"percentile":0.75265,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}