Daniel Simionato <[email protected]> writes: > Hello, > I'd like to start a discussion regarding setting HOME_MODE by default in > the /etc/login.defs file (owned by sys-apps/shadow package). > > Upstream keeps HOME_MODE commented: > https://github.com/shadow-maint/shadow/blob/3e59e9613ec40c51c19c7bb5c28468e33a4529d5/etc/login.defs#L207 > > HOME_MODE affects only useradd and newuser commands: if HOME_MODE is set, > they will use the specified permission when creating a user home directory, > otherwise the default UMASK will be used. > Since the default umask is 022, keeping HOME_MODE unset will result in home > readable home directories created by useradd, which goes against security > best practices. > > The proposal is to set HOME_MODE to 0700, or at least 0750: RedHat and RH > based distros, OpenSuse, ArchLinux all set it to 0700, Ubuntu has it at > 0750. Debian and Gentoo are two exceptions, keeping the upstream value of > HOME_MODE (although login.defs is changed in other ways). > > I previously made a PR on github where you can find more details ( > https://github.com/gentoo/gentoo/pull/35231), but as pointed in the > comments this probably warrants some discussion beforehand. > > I can understand the argument against the change, which is keeping in sync > with upstream and don't risk changing the historic default behaviour of > tools some users might rely upon. > > I do believe though there's merit in providing safer and secure defaults, > so I would like HOME_MODE to have a safe default value for Gentoo and > Gentoo based distros. > > Have a nice day, > Daniel
+1 for 0700. I also like the umask suggestions. -- Arsen Arsenović
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