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From:   "Sugar, David" <dsugar@tresys.com>
To:     "selinux-refpolicy@vger.kernel.org" 
        <selinux-refpolicy@vger.kernel.org>
Subject: [PATCH 2/5] grant permission for rpm to write to audit log
Thread-Topic: [PATCH 2/5] grant permission for rpm to write to audit log
Thread-Index: AQHVMOsUpLfILmfTT0qWwWclCs8RAA==
Date:   Tue, 2 Jul 2019 15:30:30 +0000
Message-ID: <20190702153014.14097-3-dsugar@tresys.com>
References: <20190702153014.14097-1-dsugar@tresys.com>
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Messages like this are added to the audit log when an rpm is installed:
type=3DSOFTWARE_UPDATE msg=3Daudit(1560913896.581:244): pid=3D1265 uid=3D0 =
auid=3D4294967295 ses=3D4294967295 subj=3Dsystem_u:system_r:rpm_t:s0 msg=3D=
'sw=3D"ntpdate-4.2.6p5-25.el7_3.2.x86_64" sw_type=3Drpm key_enforce=3D0 gpg=
_res=3D0 root_dir=3D"/" comm=3D"rpm" exe=3D"/usr/bin/rpm" hostname=3D? addr=
=3D?  terminal=3D? res=3Dsuccess'

These are the denials that I'm seeing:
type=3DAVC msg=3Daudit(1560913896.581:243): avc:  denied  { audit_write } f=
or  pid=3D1265 comm=3D"rpm" capability=3D29 scontext=3Dsystem_u:system_r:rp=
m_t:s0 tcontext=3Dsystem_u:system_r:rpm_t:s0 tclass=3Dcapability permissive=
=3D1

type=3DAVC msg=3Daudit(1561298132.446:240): avc:  denied  { create } for pi=
d=3D1266 comm=3D"rpm" scontext=3Dsystem_u:system_r:rpm_t:s0 tcontext=3Dsyst=
em_u:system_r:rpm_t:s0 tclass=3Dnetlink_audit_socket permissive=3D1
type=3DAVC msg=3Daudit(1561298132.446:241): avc:  denied  { write } for pid=
=3D1266 comm=3D"rpm" scontext=3Dsystem_u:system_r:rpm_t:s0 tcontext=3Dsyste=
m_u:system_r:rpm_t:s0 tclass=3Dnetlink_audit_socket permissive=3D1
type=3DAVC msg=3Daudit(1561298132.446:241): avc:  denied  { nlmsg_relay } f=
or  pid=3D1266 comm=3D"rpm" scontext=3Dsystem_u:system_r:rpm_t:s0 tcontext=
=3Dsystem_u:system_r:rpm_t:s0 tclass=3Dnetlink_audit_socket permissive=3D1
type=3DAVC msg=3Daudit(1561298132.447:243): avc:  denied  { read } for pid=
=3D1266 comm=3D"rpm" scontext=3Dsystem_u:system_r:rpm_t:s0 tcontext=3Dsyste=
m_u:system_r:rpm_t:s0 tclass=3Dnetlink_audit_socket permissive=3D1

Signed-off-by: Dave Sugar <dsugar@tresys.com>
---
 policy/modules/admin/rpm.te | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/policy/modules/admin/rpm.te b/policy/modules/admin/rpm.te
index 0e6e9c03..a28a24d3 100644
--- a/policy/modules/admin/rpm.te
+++ b/policy/modules/admin/rpm.te
@@ -73,7 +73,7 @@ files_tmpfs_file(rpm_script_tmpfs_t)
 # rpm Local policy
 #
=20
-allow rpm_t self:capability { chown dac_override fowner fsetid ipc_lock mk=
nod setfcap setgid setuid sys_chroot sys_nice sys_tty_config };
+allow rpm_t self:capability { audit_write chown dac_override fowner fsetid=
 ipc_lock mknod setfcap setgid setuid sys_chroot sys_nice sys_tty_config };
 allow rpm_t self:process { transition signal_perms getsched setsched getse=
ssion getpgid setpgid getcap setcap share getattr setexec setfscreate noats=
ecure siginh setrlimit rlimitinh dyntransition execmem setkeycreate setsock=
create getrlimit };
 allow rpm_t self:fd use;
 allow rpm_t self:fifo_file rw_fifo_file_perms;
@@ -87,6 +87,7 @@ allow rpm_t self:msgq create_msgq_perms;
 allow rpm_t self:msg { send receive };
 allow rpm_t self:file rw_file_perms;
 allow rpm_t self:netlink_kobject_uevent_socket create_socket_perms;
+allow rpm_t self:netlink_audit_socket { nlmsg_relay create_socket_perms };
=20
 allow rpm_t rpm_log_t:file { append_file_perms create_file_perms setattr_f=
ile_perms };
 logging_log_filetrans(rpm_t, rpm_log_t, file)
--=20
2.21.0