Somehow most of this used to work on older kernels, but now we need
to explicitly permit setuid, setgid, and setcap capabilities, as well
as read-only access to passwd (as we support running under a given
login name) and sssd library facilities.
Signed-off-by: Stefano Brivio <sbrivio(a)redhat.com>
Reviewed-by: Richard W.M. Jones <rjones(a)redhat.com>
---
contrib/selinux/passt.te | 7 +++++--
contrib/selinux/pasta.te | 8 ++++++--
2 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/contrib/selinux/passt.te b/contrib/selinux/passt.te
index 5868a41..a0c0526 100644
--- a/contrib/selinux/passt.te
+++ b/contrib/selinux/passt.te
@@ -49,7 +49,7 @@ require {
class netlink_route_socket { bind create nlmsg_read };
- class capability sys_tty_config;
+ class capability { sys_tty_config setuid setgid };
class cap_userns { setpcap sys_admin sys_ptrace };
class user_namespace create;
}
@@ -89,10 +89,13 @@ logging_send_syslog_msg(passt_t)
allow syslogd_t self:cap_userns sys_ptrace;
allow passt_t self:process setcap;
-allow passt_t self:capability { sys_tty_config setpcap net_bind_service };
+allow passt_t self:capability { sys_tty_config setpcap net_bind_service setuid setgid};
allow passt_t self:cap_userns { setpcap sys_admin sys_ptrace };
allow passt_t self:user_namespace create;
+auth_read_passwd_file(passt_t)
+sssd_search_lib(passt_t)
+
allow passt_t proc_net_t:file read;
allow passt_t net_conf_t:file { open read };
allow passt_t net_conf_t:lnk_file read;
diff --git a/contrib/selinux/pasta.te b/contrib/selinux/pasta.te
index 645ccee..28265dc 100644
--- a/contrib/selinux/pasta.te
+++ b/contrib/selinux/pasta.te
@@ -79,6 +79,7 @@ require {
type shell_exec_t;
type init_t;
+ class capability { sys_tty_config setuid setgid };
class cap_userns { setpcap sys_admin sys_ptrace net_bind_service net_admin };
class user_namespace create;
}
@@ -103,10 +104,13 @@ allow unconfined_t pasta_t : process transition ;
init_daemon_domain(pasta_t, pasta_exec_t)
-allow pasta_t self:capability { setpcap net_bind_service sys_tty_config dac_read_search
net_admin sys_resource };
+allow pasta_t self:capability { setpcap net_bind_service sys_tty_config dac_read_search
net_admin sys_resource setuid setgid };
allow pasta_t self:cap_userns { setpcap sys_admin sys_ptrace net_admin net_bind_service
};
allow pasta_t self:user_namespace create;
+auth_read_passwd_file(pasta_t)
+sssd_search_lib(pasta_t)
+
allow pasta_t bin_t:file { execute execute_no_trans map };
allow pasta_t nsfs_t:file { open read };
@@ -162,7 +166,7 @@ allow pasta_t unconfined_t:dir search;
allow pasta_t unconfined_t:file read;
allow pasta_t unconfined_t:lnk_file read;
allow pasta_t passwd_file_t:file { getattr open read };
-allow pasta_t self:process setpgid;
+allow pasta_t self:process { setpgid setcap };
allow pasta_t shell_exec_t:file { execute execute_no_trans map };
allow pasta_t sssd_var_lib_t:dir search;
--
2.39.2