{"id":87073,"date":"2026-06-08T15:27:08","date_gmt":"2026-06-08T15:27:08","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-59148-segmentation-fault-vulnerability-in-suricata-network-engine","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-59148-segmentation-fault-vulnerability-in-suricata-network-engine\/","title":{"rendered":"CVE-2025-59148: Segmentation Fault Vulnerability in Suricata Network Engine<\/strong>"},"content":{"rendered":"

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

CVE-2025-59148 is a significant vulnerability detected in the Suricata engine, a widely deployed network Intrusion Detection System (IDS), Intrusion Prevention System (IPS), and Network Security Monitoring (NSM) tool. This vulnerability can cause a segmentation fault in Suricata versions 8.0.0 and below, leading to potential system compromises or data leakage, especially in environments where Suricata is a critical part of the security infrastructure.<\/p>\n

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

CVE ID: CVE-2025-59148
\nSeverity: High, CVSS Score 7.5
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: Not required
\nImpact: Potential system compromise and data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Suricata | 8.0.0 and below<\/p>\n

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

The vulnerability exists due to incorrect handling of the “entropy” keyword when it is not anchored to a “sticky” buffer in Suricata. This incorrect handling can lead to a segmentation fault, causing the Suricata process to crash. An attacker can exploit this vulnerability by sending specially crafted network packets that trigger the incorrect behavior, leading to potential system compromise or data leakage.<\/p>\n

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

Below is a conceptual example of a network packet that could potentially exploit this vulnerability. This is not a working exploit, but an example to illustrate the nature of the vulnerability:<\/p>\n

POST \/suricata\/entropy HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nentropy=malicious_unanchored_value<\/code><\/pre>\n
Mitigation Guidance<\/strong><\/p>\n
Users are advised to update to Suricata version 8.0.1 or later, which contains a patch for this issue. If updating is not immediately possible, users can disable rules using the entropy keyword, or validate that they are anchored to a sticky buffer as a temporary workaround. Additionally, deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-59148 is a significant vulnerability detected in the Suricata engine, a widely deployed network Intrusion Detection System (IDS), Intrusion Prevention System (IPS), and Network Security Monitoring (NSM) tool. This vulnerability can cause a segmentation fault in Suricata versions 8.0.0 and below, leading to potential system compromises or data leakage, especially in environments where Suricata […]<\/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-87073","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