From 4e416ea4caf023299c84f4a06f3db59dd9aa1967 Mon Sep 17 00:00:00 2001
From: Stephen Smalley <sds@tycho.nsa.gov>
Date: Wed, 8 Jan 2014 09:34:31 -0500
Subject: [PATCH] Strip exec* permissions from unconfined domains.
This ensures that only domains that are explicitly allowed executable
memory permissions are granted them.
Unconfined domains retain full write + execute access to all file
types. A further change could possibly restrict execute access to
a subset of file types, e.g. system_file + exec_type.
Change-Id: I842f5a2ac5921cc2bd0ab23a091eb808fdd89565
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
---
unconfined.te | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/unconfined.te b/unconfined.te
index ef134026d..96fa4fcb4 100644
--- a/unconfined.te
+++ b/unconfined.te
@@ -19,7 +19,7 @@
allow unconfineddomain self:capability_class_set *;
allow unconfineddomain kernel:security ~{ load_policy setenforce setcheckreqprot };
allow unconfineddomain kernel:system *;
-allow unconfineddomain domain:process ~ptrace;
+allow unconfineddomain domain:process ~{ execmem execstack execheap ptrace };
allow unconfineddomain domain:fd *;
allow unconfineddomain domain:dir r_dir_perms;
allow unconfineddomain domain:lnk_file r_file_perms;
@@ -29,9 +29,9 @@ allow unconfineddomain domain:ipc_class_set *;
allow unconfineddomain domain:key *;
allow unconfineddomain fs_type:filesystem *;
allow unconfineddomain {fs_type dev_type file_type}:{ dir blk_file lnk_file sock_file fifo_file } ~relabelto;
-allow unconfineddomain {fs_type -usermodehelper -proc_security}:{ chr_file file } ~{entrypoint relabelto};
-allow unconfineddomain {dev_type -kmem_device}:{ chr_file file } ~{entrypoint relabelto};
-allow unconfineddomain file_type:{ chr_file file } ~{entrypoint relabelto};
+allow unconfineddomain {fs_type -usermodehelper -proc_security}:{ chr_file file } ~{entrypoint execmod relabelto};
+allow unconfineddomain {dev_type -kmem_device}:{ chr_file file } ~{entrypoint execmod relabelto};
+allow unconfineddomain file_type:{ chr_file file } ~{entrypoint execmod relabelto};
allow unconfineddomain node_type:node *;
allow unconfineddomain node_type:{ tcp_socket udp_socket rawip_socket } node_bind;
allow unconfineddomain netif_type:netif *;
--
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