OpenSSH 4.6 and earlier, when ChallengeResponseAuthentication is enabled, allows remote attackers to determine the existence of user accounts by attempting to authenticate via S/KEY, which displays a different response if the user account exists, a similar issue to CVE-2001-1483.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| 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 | 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 | 2.5 (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 | Ubuntu | dapper | * |
| Openssh | Ubuntu | devel | * |
| Openssh | Ubuntu | edgy | * |
| Openssh | Ubuntu | feisty | * |
| Openssh | Ubuntu | gutsy | * |