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suricata

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. 
Mishandling of multiple fragmented packets using the same IP ID value can lead to packet reassembly failure, which can lead to policy bypass. Upgrade to 7.0.6 or 6.0.20. When using af-packet, enable `defrag` to reduce the scope of the problem.

Suricata is an open-source network Intrusion Detection System (IDS), Intrusion Prevention System (IPS), and Network Security Monitoring (NSM) engine widely deployed to monitor and analyze network traffic for malicious activity. CVE-2024-37151 is a vulnerability categorized under CWE-754, indicating an improper check for unusual or exceptional conditions. Specifically, Suricata mishandles multiple fragmented IP packets that share the same IP ID value. Normally, IP fragmentation requires reassembly of packet fragments to reconstruct the original data. However, when multiple fragments with identical IP IDs are processed, Suricata's reassembly logic can fail, leading to incomplete or incorrect packet reconstruction. This failure can be exploited by attackers to craft fragmented packets that evade detection or bypass security policies enforced by Suricata, effectively allowing malicious traffic to pass through undetected. The vulnerability affects Suricata versions starting from 6.0.0 up to but not including 6.0.20, and from 7.0.0 up to but not including 7.0.6. The issue is network exploitable without requiring privileges or user interaction, as it targets the packet processing logic. The vendor has addressed this vulnerability in Suricata versions 6.0.20 and 7.0.6. Additionally, enabling the 'defrag' option when using the af-packet capture method can reduce the risk by improving fragment handling. No known exploits have been reported in the wild as of the publication date, but the potential for policy bypass makes this a significant concern for network defenders.

Detailed information about CVE-2024-37151: CWE-754: Improper Check for Unusual or Exceptional Conditions in OISF suricata affecting OISF suricata. Get real-time

CVE-2024-37151: CWE-754: Improper Check for Unusual or Exceptional Conditions in OISF suricata - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2024-37151: CWE-754: Improper Check for Unusual or Exceptional Conditions in OISF suricata

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