CVE-2024-55629: Suricata generic detection bypass using TCP urgent support
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, TCP streams with TCP urgent data (out of band data) can lead to Suricata analyzing data differently than the applications at the TCP endpoints, leading to possible evasions. Suricata 7.0.8 includes options to allow users to configure how to handle TCP urgent data. In IPS mode, you can use a rule such as drop tcp any any -> any any (sid:1; tcp.flags:U;) to drop all the packets with urgent flag set.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-55629?
CVE-2024-55629 has a severity level that can impact how Suricata analyzes TCP streams with urgent data.
How do I fix CVE-2024-55629?
To fix CVE-2024-55629, update Suricata to version 7.0.8 or later.
What type of software is affected by CVE-2024-55629?
CVE-2024-55629 affects Suricata, specifically versions prior to 7.0.8.
What are the consequences of CVE-2024-55629?
CVE-2024-55629 can lead to discrepancies in data analysis between Suricata and the TCP endpoints due to improper handling of urgent data.
When was CVE-2024-55629 disclosed?
CVE-2024-55629 was disclosed prior to the release of Suricata version 7.0.8.