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CVE-2023-27599

7.5 · HIGH

OpenSIPS is a Session Initiation Protocol (SIP) server implementation.

Published Mar 15, 2023CWE-20EPSS 0.97%

Overview

CVE-2023-27599 is a high-severity vulnerability. It was published on March 15, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109dGitHubgithub.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jxRefopensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdfGitHubgithub.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109dGitHubgithub.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jxRefopensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2023-27599?

CVE-2023-27599 is a high-severity vulnerability. It was published on March 15, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-27599?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-27599?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-27599?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-27599 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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