OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error. Similarly, other timing attacks against keystroke entry could occur.
The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openssh | Ubuntu | devel | * |
| Openssh | Ubuntu | noble | * |
| Openssh | Ubuntu | upstream | * |
| Openssh-ssh1 | Ubuntu | upstream | * |