It was discovered that the Subiquity installer for Ubuntu Server logged the LUKS full disk encryption password if one was entered.
Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Subiquity | Canonical | * | 20.05.2 (excluding) |
Subiquity | Ubuntu | bionic | * |
Subiquity | Ubuntu | eoan | * |
Subiquity | Ubuntu | esm-apps/bionic | * |
Subiquity | Ubuntu | esm-apps/focal | * |
Subiquity | Ubuntu | esm-apps/jammy | * |
Subiquity | Ubuntu | focal | * |
Subiquity | Ubuntu | groovy | * |
Subiquity | Ubuntu | hirsute | * |
Subiquity | Ubuntu | impish | * |
Subiquity | Ubuntu | jammy | * |
Subiquity | Ubuntu | kinetic | * |
Subiquity | Ubuntu | snap | * |
Subiquity | Ubuntu | trusty | * |
Subiquity | Ubuntu | upstream | * |
While logging all information may be helpful during development stages, it is important that logging levels be set appropriately before a product ships so that sensitive user data and system information are not accidentally exposed to potential attackers. Different log files may be produced and stored for: