CVE-2023-27597: Opensips

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.8 and 3.2.5, when a specially crafted SIP message is processed by the function `rewrite_ruri`, a crash occurs due to a segmentation fault. This issue causes the server to crash. It affects configurations containing functions that make use of the affected code, such as the function `setport`. This issue has been fixed in version 3.1.8 and 3.2.5.

Affected products

• Opensips Opensips: before 3.1.8 (fixed in 3.1.8); from 3.2.0, before 3.2.5 (fixed in 3.2.5)

Published 2023-03-15. Last modified 2026-06-17.