{"cve":"CVE-2023-28096","nvd":{"published":"2023-03-15T22:15:10.527","modified":"2026-06-17T05:46:51.723","status":"Modified","description":"OpenSIPS, a Session Initiation Protocol (SIP) server implementation, has a memory leak starting in the 2.3 branch and priot to versions 3.1.8 and 3.2.5. The memory leak was detected in the function `parse_mi_request` while performing coverage-guided fuzzing. This issue can be reproduced by sending multiple requests of the form `{\"jsonrpc\": \"2.0\",\"method\": \"log_le`. This malformed message was tested against an instance of OpenSIPS via FIFO transport layer and was found to increase the memory consumption over time.\n\nTo abuse this memory leak, attackers need to reach the management interface (MI) which typically should only be exposed on trusted interfaces. In cases where the MI is exposed to the internet without authentication, abuse of this issue will lead to memory exhaustion which may affect the underlying system’s availability. No authentication is typically required to reproduce this issue. On the other hand, memory leaks may occur in other areas of OpenSIPS where the cJSON library is used for parsing JSON objects.\n\nThe issue has been fixed in versions 3.1.8 and 3.2.5.","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-401"],"references":["https://github.com/OpenSIPS/opensips/commit/417568707520af25ec5c5dd91da18e6db3649dcb","https://github.com/OpenSIPS/opensips/security/advisories/GHSA-2mg2-g46r-j4qr","https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf","https://github.com/OpenSIPS/opensips/commit/417568707520af25ec5c5dd91da18e6db3649dcb","https://github.com/OpenSIPS/opensips/security/advisories/GHSA-2mg2-g46r-j4qr"],"products":["opensips:opensips"],"source":"nvd","synced_at":"2026-10-19T21:37:41.955480748+00:00"},"epss":{"cve":"CVE-2023-28096","score":0.00767,"percentile":0.5554,"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."]}