CVE-2023-28095

Name: CVE-2023-28095
Creator: NVD / NIST
Published: 2023-03-15T22:15:10.44+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.97%

Last modified Jun 17, 2026

CVE-2023-28095 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Versions prior to 3.1.7 and 3.2.4 have a potential issue in `msg_translator.c:2628` which might lead to a server crash. EPSS estimates a 0.97% chance of exploitation in the next 30 days.

Description

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Versions prior to 3.1.7 and 3.2.4 have a potential issue in `msg_translator.c:2628` which might lead to a server crash. This issue was found while fuzzing the function `build_res_buf_from_sip_req` but could not be reproduced against a running instance of OpenSIPS. This issue could not be exploited against a running instance of OpenSIPS since no public function was found to make use of this vulnerable code. Even in the case of exploitation through unknown vectors, it is highly unlikely that this issue would lead to anything other than Denial of Service. This issue has been fixed in versions 3.1.7 and 3.2.4.

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-20

Affected Software

Vendor	Product	Versions
Opensips	Opensips	< 3.1.7
Opensips	Opensips	>= 3.2.0, < 3.2.4

References

https://github.com/OpenSIPS/opensips/commit/9cf3dd3398719dd91207495f76d7726701c5145cPatch, Third Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-7pf3-24qg-8v9hThird Party Advisory
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdfVendor Advisory
https://github.com/OpenSIPS/opensips/commit/9cf3dd3398719dd91207495f76d7726701c5145cPatch, Third Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-7pf3-24qg-8v9hThird 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-2023-28095?

How severe is CVE-2023-28095?

CVE-2023-28095 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-2023-28095?

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-2023-28095?

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

Scan your code now

Source: NVD / NIST