CVE-2023-27596 - CVE House

Back to Database

Status published High CVE-2023-27596

OpenSIPS has vulnerability in the codec_delete_XX() functions

7.5 CVSS

Vulnerability Description

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.8 and 3.2.5, OpenSIPS crashes when a malformed SDP body is sent multiple times to an OpenSIPS configuration that makes use of the `stream_process` function. This issue was discovered during coverage guided fuzzing of the function `codec_delete_except_re`. By abusing this vulnerability, an attacker is able to crash the server. It affects configurations containing functions that rely on the affected code, such as the function `codec_delete_except_re`. This issue has been fixed in version 3.1.8 and 3.2.5.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-27596

Check My Exposure

Credits & Attribution

No credits recorded in the NVD database.

References

More from OpenSIPS

View All →

OpenSIPS has vulnerability in the ds_is_in_list() function

OpenSIPS has vulnerability in the Digest Authentication Parser

OpenSIPS has vulnerability in the Content-Length Parser

OpenSIPS has memory leak in cJSON lib

OpenSIPS has vulnerability in the building the local negative replies

Affected Vendor

OpenSIPS

View all reports →

Affected Software

opensips

Vulnerable Versions:

< 3.1.8, >= 3.2.0, < 3.2.5

Timeline

Official Publish: March 15th, 2023

Last Modified: February 25th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1499 Endpoint Denial of Service

T1498 Network Denial of Service

T1190 Exploit Public-Facing Application

T1562 Impair Defenses

Defense Evasion

T1046 Network Service Discovery