Snort: Denial of service

Background Snort is a widely deployed intrusion detection program. Description Randy Smith, Christian Estan and Somesh Jha discovered that the rule matching algorithm of Snort can be exploited in a way known as a "backtracking attack" to perform numerous time-consuming operations. Impact A remote...

CVE-2006-6931

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."...

CVE-2006-6931

Removed by vendor...