{"id":87074,"date":"2026-06-08T18:27:21","date_gmt":"2026-06-08T18:27:21","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-59150-segmentation-fault-vulnerability-in-suricata-8-0-0","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-59150-segmentation-fault-vulnerability-in-suricata-8-0-0\/","title":{"rendered":"CVE-2025-59150: Segmentation Fault Vulnerability in Suricata 8.0.0<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

This report focuses on the CVE-2025-59150 vulnerability found in Suricata 8.0.0, a network Intrusion Detection System (IDS), Intrusion Prevention System (IPS), and Network Security Monitoring (NSM) engine. The software is widely used for network monitoring and security, making this vulnerability significant to numerous organizations. The issue lies in the engine’s usage of the tls.subjectaltname keyword, which can lead to a segmentation fault in certain conditions.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-59150
\nSeverity: High (CVSS: 7.5)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Suricata | 8.0.0<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability stems from Suricata’s handling of the tls.subjectaltname keyword. A segmentation fault can occur when the decoded subjectaltname contains a NULL byte. An attacker can exploit this vulnerability remotely, without user interaction, by sending specially crafted network packets that trigger the segmentation fault, potentially leading to system compromise or data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here’s a conceptual example of a malicious network packet that an attacker might use to exploit this vulnerability.<\/p>\n

POST \/suricata\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/tls\n{ \"subjectaltname\": \"malicious\\x00payload\" }<\/code><\/pre>\n
In this example, the malicious payload contains a NULL byte (\\x00), triggering the segmentation fault in Suricata 8.0.0.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Organizations are urged to apply the vendor patch by upgrading to Suricata 8.0.1 where this issue has been fixed. If upgrading isn’t immediately feasible, as a temporary mitigation, disable rules using the tls.subjectaltname keyword or employ a Web Application Firewall (WAF) or IDS.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This report focuses on the CVE-2025-59150 vulnerability found in Suricata 8.0.0, a network Intrusion Detection System (IDS), Intrusion Prevention System (IPS), and Network Security Monitoring (NSM) engine. The software is widely used for network monitoring and security, making this vulnerability significant to numerous organizations. The issue lies in the engine’s usage of the tls.subjectaltname […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-87074","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t