From 17859404f6a1030488a657c4c406a7b83ea9957c Mon Sep 17 00:00:00 2001
From: Stephen Smalley <sds@tycho.nsa.gov>
Date: Fri, 7 Mar 2014 14:46:38 -0500
Subject: [PATCH] Address dnsmasq denials.
Address dnsmasq denials such as:
avc: denied { use } for pid=9145 comm="dnsmasq" path="pipe:[29234]" dev="pipefs" ino=29234 scontext=u:r:dnsmasq:s0 tcontext=u:r:netd:s0 tclass=fd
avc: denied { read } for pid=9145 comm="dnsmasq" path="pipe:[29234]" dev="pipefs" ino=29234 scontext=u:r:dnsmasq:s0 tcontext=u:r:netd:s0 tclass=fifo_file
avc: denied { read write } for pid=9145 comm="dnsmasq" path="socket:[7860]" dev="sockfs" ino=7860 scontext=u:r:dnsmasq:s0 tcontext=u:r:netd:s0 tclass=netlink_kobject_uevent_socket
avc: denied { read write } for pid=9145 comm="dnsmasq" path="socket:[8221]" dev="sockfs" ino=8221 scontext=u:r:dnsmasq:s0 tcontext=u:r:netd:s0 tclass=unix_stream_socket
avc: denied { read write } for pid=9523 comm="dnsmasq" path="socket:[7860]" dev="sockfs" ino=7860 scontext=u:r:dnsmasq:s0 tcontext=u:r:netd:s0 tclass=netlink_kobject_uevent_socket
avc: denied { read write } for pid=9523 comm="dnsmasq" path="socket:[7862]" dev="sockfs" ino=7862 scontext=u:r:dnsmasq:s0 tcontext=u:r:netd:s0 tclass=netlink_route_socket
avc: denied { net_raw } for pid=9607 comm="dnsmasq" capability=13 scontext=u:r:dnsmasq:s0 tcontext=u:r:dnsmasq:s0 tclass=capability
avc: denied { net_admin } for pid=9607 comm="dnsmasq" capability=12 scontext=u:r:dnsmasq:s0 tcontext=u:r:dnsmasq:s0 tclass=capability
Change-Id: I2bd1eaf22879f09df76a073028cc282362eebeee
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
---
dnsmasq.te | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/dnsmasq.te b/dnsmasq.te
index fcf7c6d3d..61382a207 100644
--- a/dnsmasq.te
+++ b/dnsmasq.te
@@ -5,7 +5,16 @@ type dnsmasq_exec, exec_type, file_type;
net_domain(dnsmasq)
-allow dnsmasq self:capability { net_bind_service setgid setuid };
+allow dnsmasq self:capability { net_admin net_raw net_bind_service setgid setuid };
allow dnsmasq dhcp_data_file:dir w_dir_perms;
allow dnsmasq dhcp_data_file:file create_file_perms;
+
+# Inherit and use open files from netd.
+allow dnsmasq netd:fd use;
+allow dnsmasq netd:fifo_file { read write };
+# TODO: Investigate whether these inherited sockets should be closed on exec.
+allow dnsmasq netd:netlink_kobject_uevent_socket { read write };
+allow dnsmasq netd:netlink_nflog_socket { read write };
+allow dnsmasq netd:netlink_route_socket { read write };
+allow dnsmasq netd:unix_stream_socket { read write };
--
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