CVE-2023-28098: Opensips

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, a specially crafted Authorization header causes OpenSIPS to crash or behave in an unexpected way due to a bug in the function `parse_param_name()` . This issue was discovered while performing coverage guided fuzzing of the function parse_msg. The AddressSanitizer identified that the issue occurred in the function `q_memchr()` which is being called by the function `parse_param_name()`. This issue may cause erratic program behaviour or a server crash. It affects configurations containing functions that make use of the affected code, such as the function `www_authorize()` . Versions 3.1.7 and 3.2.4 contain a fix.

Affected products

• Opensips Opensips: before 3.1.7 (fixed in 3.1.7); from 3.2.0, before 3.2.4 (fixed in 3.2.4)

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