Re: rssh security update breaks rsync via Synology's "hyper backup"

2019-02-20 Thread Roman Medina-Heigl Hernandez
El 19/02/2019 a las 17:44, Russ Allbery escribió: > Roman Medina-Heigl Hernandez writes: > > So you cannot overwrite /home/synology/rsyncd.conf. > Can the client just do: > > rsync rsyncd.conf :./ > You're right, I was wrong. It's game over :) > I think to

Re: rssh security update breaks rsync via Synology's "hyper backup"

2019-02-19 Thread Roman Medina-Heigl Hernandez
El 19/02/2019 a las 4:16, Russ Allbery escribió: > Unfortunately, I took a closer look, and it turns out that this command > was never safe. It also allows arbitrary code excution on the server > side if the client can write to $HOME. This is because: > >--config=FILE > This specif

Re: rssh security update breaks rsync via Synology's "hyper backup"

2019-02-18 Thread Roman Medina-Heigl Hernandez
El 18/02/2019 a las 18:27, Russ Allbery escribió: > While I agree that using undocumented features of rsync is a little > dubious, I'm also willing to include a fix to allow the specific command > line "rsync --server --daemon " since (a) it seems to be safe, (b) > looks easy enough to do, and (c)

Re: rssh security update breaks rsync via Synology's "hyper backup"

2019-02-14 Thread Roman Medina-Heigl Hernandez
Added Russ (rssh maintainer). I cannot probe it but I guess chances are high that the issue is present both in stable and oldstable (I cannot find a good reason to filter different commands: solution should be the same or very similar) so I'm still keeping debian-security in the loop. PS: Thx Ho