On Mon, Jun 20, 2022 at 01:44:05PM +0400, Marc-André Lureau wrote: > Hi! > > https://bugzilla.redhat.com/show_bug.cgi?id=2093355 ("AVCs when trying to > execute a command through qemu-ga ("guest-exec" command)") describes an > issue with fedora/rhel SELinux rules, where some program executions are > denied. > > qemu-ga has "virt_qemu_ga_t" context, and is not allowed to execute > binaries that are not "bin_t", iiuc. The suggestion from Renaud Métrich is > for qemu-ga exec command to launch the user program through an helper > program that would have the virt_qemu_ga_unconfined_exec_t context, and > appropriate rules in selinux (similar to fsfreeze-hook rules), so any > program can be executed. qemu-ga would thus ship and use that helper, in > all OS, to avoid varying code paths. > > Does that sound reasonable or should we try to find a solution with SELinux > rules instead? I thought was did not allow qemu-ga to execute binaries at all, regardless of whether they're bin_t or not. The 'guest-exec' command is essentially a giant hole that defeats the purpose of confining qemu-ga with SELinux at all IMHO. IMHO execution of external commands should only be allowed after toggling a SELinux boolean tunable. With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| _______________________________________________ selinux mailing list -- selinux@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to selinux-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/selinux@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
