imudp in rsyslog 4.x before 4.1.2, 3.21 before 3.21.9 beta, and 3.20 before 3.20.2 generates a message even when it is sent by an unauthorized sender, which allows remote attackers to cause a denial of service (disk consumption) via a large number of spurious messages.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Rsyslog | Rsyslog | 3.12.1 (including) | 3.12.1 (including) |
| Rsyslog | Rsyslog | 3.20.0 (including) | 3.20.0 (including) |
| Rsyslog | Rsyslog | 4.1.0 (including) | 4.1.0 (including) |
| Rsyslog | Rsyslog | 4.1.1 (including) | 4.1.1 (including) |
| Rsyslog | Ubuntu | hardy | * |
| Rsyslog | Ubuntu | intrepid | * |
| Rsyslog | Ubuntu | upstream | * |