CVE-2023-28098

Name: CVE-2023-28098
Creator: NVD / NIST
Published: 2023-03-15T23:15:09.717+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.91%

Last modified Jun 17, 2026

CVE-2023-28098 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 3.1.7 and 3.2.4, a specially crafted Authorization header causes OpenSIPS to crash or behave in an unexpected way due to a bug in the function `parse_param_name()` . EPSS estimates a 0.91% chance of exploitation in the next 30 days.

Description

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, a specially crafted Authorization header causes OpenSIPS to crash or behave in an unexpected way due to a bug in the function `parse_param_name()` . This issue was discovered while performing coverage guided fuzzing of the function parse_msg. The AddressSanitizer identified that the issue occurred in the function `q_memchr()` which is being called by the function `parse_param_name()`. This issue may cause erratic program behaviour or a server crash. It affects configurations containing functions that make use of the affected code, such as the function `www_authorize()` . Versions 3.1.7 and 3.2.4 contain a fix.

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

0.91%

55.2th 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/dd9141b6f67d7df4072f3430f628d4b73df5e102Patch, Third Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-jrqg-vppj-hr2hThird Party Advisory
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdfThird Party Advisory
https://github.com/OpenSIPS/opensips/commit/dd9141b6f67d7df4072f3430f628d4b73df5e102Patch, Third Party Advisory
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-jrqg-vppj-hr2hThird 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
Status: Modified

Frequently Asked Questions

What is CVE-2023-28098?

How severe is CVE-2023-28098?

CVE-2023-28098 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.

How do I fix CVE-2023-28098?

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-2023-28098?

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

Scan your code now

Source: NVD / NIST