CVE-2023-28097

Name: CVE-2023-28097
Creator: NVD / NIST
Published: 2023-03-15T23:15:09.627+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.97%

Last modified Jun 17, 2026

CVE-2023-28097 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.9 and 3.2.6, a malformed SIP message containing a large _Content-Length_ value and a specially crafted Request-URI causes a segmentation fault in OpenSIPS. EPSS estimates a 0.97% chance of exploitation in the next 30 days.

Description

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.9 and 3.2.6, a malformed SIP message containing a large _Content-Length_ value and a specially crafted Request-URI causes a segmentation fault in OpenSIPS. This issue occurs when a large amount of shared memory using the `-m` flag was allocated to OpenSIPS, such as 10 GB of RAM. On the test system, this issue occurred when shared memory was set to `2362` or higher. This issue is fixed in versions 3.1.9 and 3.2.6. The only workaround is to guarantee that the Content-Length value of input messages is never larger than `2147483647`.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.97%

57.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Opensips	Opensips	< 3.1.9
Opensips	Opensips	>= 3.2.0, < 3.2.6

References

https://github.com/OpenSIPS/opensips/commit/7cab422e2fc648f910abba34f3f0dbb3ae171ff5Patch, Third Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-c6j5-f4h4-2xrqThird Party Advisory
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdfVendor Advisory
https://github.com/OpenSIPS/opensips/commit/7cab422e2fc648f910abba34f3f0dbb3ae171ff5Patch, Third Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-c6j5-f4h4-2xrqThird Party Advisory
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdfVendor Advisory

Timeline

Published: Mar 15, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-28097?

How severe is CVE-2023-28097?

CVE-2023-28097 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.

How do I fix CVE-2023-28097?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-28097?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST