High · published November 27, 2025
⚡ A single byte read heap overflow can crash Suricata's logging system! This serious vulnerability, lurking in versions prior to 7.0.13 and 8.0.2, can spell disaster if the alert queue isn’t managed properly. 🔥 Think of it as a jammed printer in an office: when the paper stack gets too full, it leads to a complete halt in printing. Similarly, when the alert queue fills up without proper handling, Suricata can hit a crashing snag! If left unaddressed, this vulnerability could cause Suricata's logging capabilities to fail dramatically, leading to missed alerts and compromised security monitoring. As attackers continuously flood the queue, the entire IDS/IPS system risks crashing under pressure, severely weakening your network defense.
Think of it as a jammed printer in an office: when the paper stack gets too full, it leads to a complete halt in printing. Similarly, when the alert queue fills up without proper handling, Suricata can hit a crashing snag! This heap overflow occurs during the logging process of verdicts in the eve.alert and eve.drop records. Specifically, it requires the alert queue to be filled with alerts before a pass rule is triggered, resulting in a potential crash.
If left unaddressed, this vulnerability could cause Suricata's logging capabilities to fail dramatically, leading to missed alerts and compromised security monitoring. As attackers continuously flood the queue, the entire IDS/IPS system risks crashing under pressure, severely weakening your network defense. To safeguard your system, upgrade to versions 7.0.13 or 8.0.2 immediately. Additionally, consider increasing the alert queue size by modifying the 'packet-alert-max' setting in suricata.yaml to minimize the chance of hitting this overflow situation in the future. You can tackle this head-on! By applying the patch and adjusting your settings, you'll reinforce your Suricata setup. You've got this! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| oisf/suricata | < 7.0.13 | 7.0.13 |
| oisf/suricata | ≥ 8.0.0, < 8.0.2 | 8.0.2 |