
CVE-2006-6931
https://notcve.org/view.php?id=CVE-2006-6931
16 Jan 2007 — Algorithmic complexity vulnerability in Snort before 2.6.1, during predicate evaluation in rule matching for certain rules, allows remote attackers to cause a denial of service (CPU consumption and detection outage) via crafted network traffic, aka a "backtracking attack." Vulnerabilidad de complejidad algorítmica en Snort anterior a 2.6.1, durante la evaluación de un predicado en el chequeo de reglas para ciertas reglas, permite a atacantes remotos provocar una denegación de servicio (consumo de CPU y para... • http://lists.immunitysec.com/pipermail/dailydave/2007-January/003954.html •

CVE-2004-2652 – Snort 2.1/2.2 - DecodeTCPOptions Remote Denial of Service
https://notcve.org/view.php?id=CVE-2004-2652
31 Dec 2004 — The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference. • https://www.exploit-db.com/exploits/25046 •