passwd before 1:4.0.13 on Ubuntu 6.06 LTS leaves the root password blank instead of locking it when the administrator selects the Go Back option after the final Installation complete message and uses the main menu, which causes the password to be zeroed out in the installers memory.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ubuntu_linux | Ubuntu | 6.06_lts (including) | 6.06_lts (including) |
| Shadow | Ubuntu | dapper | * |