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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Snort | Snort | * | 2.6.2 (including) |
| Snort | Ubuntu | dapper | * |
| Snort | Ubuntu | devel | * |
| Snort | Ubuntu | edgy | * |
| Snort | Ubuntu | feisty | * |
| Snort | Ubuntu | gutsy | * |
| Snort | Ubuntu | hardy | * |
| Snort | Ubuntu | intrepid | * |
| Snort | Ubuntu | jaunty | * |
| Snort | Ubuntu | karmic | * |