CVE-2024-47188: Suricata http/byte-ranges: missing hashtable random seed leads to potential DoS

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-10-16 · updated 2026-06-17
Weakness: CWE-330

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.7, missing initialization of the random seed for "thash" leads to byte-range tracking having predictable hash table behavior. This can lead to an attacker forcing lots of data into a single hash bucket, leading to severe performance degradation. This issue has been addressed in 7.0.7.

Affected products

OISF suricata: before 7.0.7 — fixed in 7.0.7

How to fix

Upgrade to a fixed version: OISF suricata 7.0.7. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2024-47188 or the next vulnerability affects your stack