BaseFortify

Publication date: 2025-10-01

Last updated on: 2025-10-23

Assigner: GitHub, Inc.

Description

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Version 8.0.0's usage of the tls.subjectaltname keyword can lead to a segmentation fault when the decoded subjectaltname contains a NULL byte. This issue is fixed in version 8.0.1. To workaround this issue, disable rules using the tls.subjectaltname keyword.

CVSS Scores

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Meta Information

Published

2025-10-01

Last Modified

2025-10-23

Generated

2026-07-06

AI Q&A

2025-10-01

EPSS Evaluated

2026-07-05

NVD

CVE-2025-59150

Affected Vendors & Products

Vendor	Product	Version / Range
oisf	suricata	8.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-476	The product dereferences a pointer that it expects to be valid but is NULL.

Attack-Flow Graph

Executive Summary

This vulnerability in Suricata version 8.0.0 occurs when using the tls.subjectaltname keyword. If the decoded subjectaltname contains a NULL byte, it can cause a segmentation fault, leading to a crash or instability in the system. This issue is resolved in version 8.0.1, and a temporary workaround is to disable rules that use the tls.subjectaltname keyword.

Impact Analysis

The vulnerability can cause Suricata to crash or become unstable due to a segmentation fault when processing certain TLS subject alternative names containing NULL bytes. This can lead to denial of service (DoS) conditions, impacting network monitoring and security operations.

Mitigation Strategies

To mitigate this vulnerability, you should disable rules using the tls.subjectaltname keyword in Suricata version 8.0.0, or upgrade to Suricata version 8.0.1 where the issue is fixed.

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