Non-registered IRC users using (1) ircd-hybrid 7.0.1 and earlier, (2) ircd-ratbox 1.5.1 and earlier, or (3) ircd-ratbox 2.0rc6 and earlier do not have a rate-limit imposed, which could allow remote attackers to cause a denial of service by repeatedly making requests, which are slowly dequeued.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ircd-hybrid | Ircd-hybrid | * | 7.0.1 (including) |
| Ircd-ratbox | Ircd-ratbox | * | 1.5.1 (including) |
| Ircd-ratbox | Ircd-ratbox | * | 2.0_rc6 (including) |