CVE-2023-27599

HighCVSS 7.5/10Last modified Jun 17, 2026

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 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
OpenSIPS	opensips	< 3.1.7; >= 3.2.0, < 3.2.4

References

https://github.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109dPatch, Third Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jxThird Party Advisory
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdfThird Party Advisory
https://github.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109dPatch, Third Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jxThird Party Advisory
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdfThird Party Advisory

Timeline

Published: Mar 15, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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