The default configuration of OpenSSH through 6.1 enforces a fixed time limit between establishing a TCP connection and completing a login, which makes it easier for remote attackers to cause a denial of service (connection-slot exhaustion) by periodically making many new TCP connections.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openssh | Openbsd | * | 6.1 (including) |
| Openssh | Openbsd | 1.2 (including) | 1.2 (including) |
| Openssh | Openbsd | 1.2.1 (including) | 1.2.1 (including) |
| Openssh | Openbsd | 1.2.2 (including) | 1.2.2 (including) |
| Openssh | Openbsd | 1.2.3 (including) | 1.2.3 (including) |
| Openssh | Openbsd | 1.2.27 (including) | 1.2.27 (including) |
| Openssh | Openbsd | 1.3 (including) | 1.3 (including) |
| Openssh | Openbsd | 1.5 (including) | 1.5 (including) |
| Openssh | Openbsd | 1.5.7 (including) | 1.5.7 (including) |
| Openssh | Openbsd | 1.5.8 (including) | 1.5.8 (including) |
| Openssh | Openbsd | 2.1 (including) | 2.1 (including) |
| Openssh | Openbsd | 2.1.1 (including) | 2.1.1 (including) |
| Openssh | Openbsd | 2.2 (including) | 2.2 (including) |
| Openssh | Openbsd | 2.3 (including) | 2.3 (including) |
| Openssh | Openbsd | 2.3.1 (including) | 2.3.1 (including) |
| Openssh | Openbsd | 2.5 (including) | 2.5 (including) |
| Openssh | Openbsd | 2.5.1 (including) | 2.5.1 (including) |
| Openssh | Openbsd | 2.5.2 (including) | 2.5.2 (including) |
| Openssh | Openbsd | 2.9 (including) | 2.9 (including) |
| Openssh | Openbsd | 2.9.9 (including) | 2.9.9 (including) |
| Openssh | Openbsd | 2.9.9p2 (including) | 2.9.9p2 (including) |
| Openssh | Openbsd | 2.9p1 (including) | 2.9p1 (including) |
| Openssh | Openbsd | 2.9p2 (including) | 2.9p2 (including) |
| Openssh | Openbsd | 3.0 (including) | 3.0 (including) |
| Openssh | Openbsd | 3.0.1 (including) | 3.0.1 (including) |
| Openssh | Openbsd | 3.0.1p1 (including) | 3.0.1p1 (including) |
| Openssh | Openbsd | 3.0.2 (including) | 3.0.2 (including) |
| Openssh | Openbsd | 3.0.2p1 (including) | 3.0.2p1 (including) |
| Openssh | Openbsd | 3.0p1 (including) | 3.0p1 (including) |
| Openssh | Openbsd | 3.1 (including) | 3.1 (including) |
| Openssh | Openbsd | 3.1p1 (including) | 3.1p1 (including) |
| Openssh | Openbsd | 3.2 (including) | 3.2 (including) |
| Openssh | Openbsd | 3.2.2 (including) | 3.2.2 (including) |
| Openssh | Openbsd | 3.2.2p1 (including) | 3.2.2p1 (including) |
| Openssh | Openbsd | 3.2.3p1 (including) | 3.2.3p1 (including) |
| Openssh | Openbsd | 3.3 (including) | 3.3 (including) |
| Openssh | Openbsd | 3.3p1 (including) | 3.3p1 (including) |
| Openssh | Openbsd | 3.4 (including) | 3.4 (including) |
| Openssh | Openbsd | 3.4p1 (including) | 3.4p1 (including) |
| Openssh | Openbsd | 3.5 (including) | 3.5 (including) |
| Openssh | Openbsd | 3.5p1 (including) | 3.5p1 (including) |
| Openssh | Openbsd | 3.6 (including) | 3.6 (including) |
| Openssh | Openbsd | 3.6.1 (including) | 3.6.1 (including) |
| Openssh | Openbsd | 3.6.1p1 (including) | 3.6.1p1 (including) |
| Openssh | Openbsd | 3.6.1p2 (including) | 3.6.1p2 (including) |
| Openssh | Openbsd | 3.7 (including) | 3.7 (including) |
| Openssh | Openbsd | 3.7.1 (including) | 3.7.1 (including) |
| Openssh | Openbsd | 3.7.1p1 (including) | 3.7.1p1 (including) |
| Openssh | Openbsd | 3.7.1p2 (including) | 3.7.1p2 (including) |
| Openssh | Openbsd | 3.8 (including) | 3.8 (including) |
| Openssh | Openbsd | 3.8.1 (including) | 3.8.1 (including) |
| Openssh | Openbsd | 3.8.1p1 (including) | 3.8.1p1 (including) |
| Openssh | Openbsd | 3.9 (including) | 3.9 (including) |
| Openssh | Openbsd | 3.9.1 (including) | 3.9.1 (including) |
| Openssh | Openbsd | 3.9.1p1 (including) | 3.9.1p1 (including) |
| Openssh | Openbsd | 4.0 (including) | 4.0 (including) |
| Openssh | Openbsd | 4.0p1 (including) | 4.0p1 (including) |
| Openssh | Openbsd | 4.1 (including) | 4.1 (including) |
| Openssh | Openbsd | 4.1p1 (including) | 4.1p1 (including) |
| Openssh | Openbsd | 4.2 (including) | 4.2 (including) |
| Openssh | Openbsd | 4.2p1 (including) | 4.2p1 (including) |
| Openssh | Openbsd | 4.3 (including) | 4.3 (including) |
| Openssh | Openbsd | 4.3p1 (including) | 4.3p1 (including) |
| Openssh | Openbsd | 4.3p2 (including) | 4.3p2 (including) |
| Openssh | Openbsd | 4.4 (including) | 4.4 (including) |
| Openssh | Openbsd | 4.4p1 (including) | 4.4p1 (including) |
| Openssh | Openbsd | 4.5 (including) | 4.5 (including) |
| Openssh | Openbsd | 4.6 (including) | 4.6 (including) |
| Openssh | Openbsd | 4.7 (including) | 4.7 (including) |
| Openssh | Openbsd | 4.8 (including) | 4.8 (including) |
| Openssh | Openbsd | 4.9 (including) | 4.9 (including) |
| Openssh | Openbsd | 5.0 (including) | 5.0 (including) |
| Openssh | Openbsd | 5.1 (including) | 5.1 (including) |
| Openssh | Openbsd | 5.2 (including) | 5.2 (including) |
| Openssh | Openbsd | 5.3 (including) | 5.3 (including) |
| Openssh | Openbsd | 5.4 (including) | 5.4 (including) |
| Openssh | Openbsd | 5.5 (including) | 5.5 (including) |
| Openssh | Openbsd | 5.6 (including) | 5.6 (including) |
| Openssh | Openbsd | 5.7 (including) | 5.7 (including) |
| Openssh | Openbsd | 5.8 (including) | 5.8 (including) |
| Openssh | Openbsd | 5.8p2 (including) | 5.8p2 (including) |
| Openssh | Openbsd | 5.9 (including) | 5.9 (including) |
| Openssh | Openbsd | 6.0 (including) | 6.0 (including) |
| Red Hat Enterprise Linux 6 | RedHat | openssh-0:5.3p1-94.el6 | * |
| RHEV 3.X Hypervisor and Agents for RHEL-6 | RedHat | rhev-hypervisor6-0:6.5-20131115.0.3.2.el6_5 | * |
| Openssh | Ubuntu | hardy | * |
| Openssh | Ubuntu | lucid | * |
| Openssh | Ubuntu | oneiric | * |
| Openssh | Ubuntu | precise | * |
| Openssh | Ubuntu | quantal | * |
| Openssh | Ubuntu | upstream | * |