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CVE-2023-27599 Details

Description

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, when the function `append_hf` handles a SIP message with a malformed To header, a call to the function `abort()` is performed, resulting in a crash. This is due to the following check in `data_lump.c:399` in the function `anchor_lump`. An attacker abusing this vulnerability will crash OpenSIPS leading to Denial of Service. It affects configurations containing functions that make use of the affected code, such as the function `append_hf`. This issue has been fixed in versions 3.1.7 and 3.2.4.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109d	CVE	PatchThird Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jx	CVE	Third Party Advisory
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf	CVE	Third Party Advisory
https://github.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109d	[email protected]	PatchThird Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jx	[email protected]	Third Party Advisory
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf	[email protected]	Third Party Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-noinfo	Insufficient Information to Classify Weakness	[email protected]
CWE-20	Improper Input Validation	[email protected]

Affected Products

Product	Versions
opensips opensips	< 3.1.7 >= 3.2.0, < 3.2.4
CPE cpe:2.3:a:opensips:opensips:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Mar 21, 2023	Initial Analysis	[email protected]