CVE-2023-28095

OpenSIPS has vulnerability in the building the local negative replies

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.23%
Vendor Advisory opensips.org
Affected: OpenSIPS opensips
Published at:
Updated at:

References

Link Tags
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-7pf3-24qg-8v9h third party advisory
https://github.com/OpenSIPS/opensips/commit/9cf3dd3398719dd91207495f76d7726701c5145c third party advisory patch
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-28095?
CVE-2023-28095 has been scored as a high severity vulnerability.
How to fix CVE-2023-28095?
To fix CVE-2023-28095, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-28095 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-28095 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-28095?
CVE-2023-28095 affects OpenSIPS opensips.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.