selinux: Update policy to fix user/group settings

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@redhat.com>

2 files changed, 13 insertions, 4 deletions

diff --git a/contrib/selinux/passt.te b/contrib/selinux/passt.te
index 5868a41..507fc89 100644
--- a/contrib/selinux/passt.te
+++ b/contrib/selinux/passt.te
@@ -47,9 +47,11 @@ require {
 	type port_t;
 	type http_port_t;
 
+	type passwd_file_t;
+
 	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 +91,13 @@ 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;
 
+allow passt_t passwd_file_t:file read_file_perms;
+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..ee82b0f 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;
 
+allow pasta_t passwd_file_t:file read_file_perms;
+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;