From ef6857944dd0dcdf7eccc27ff2708e907e5dbd75 Mon Sep 17 00:00:00 2001
From: Dave Sugar <dsugar100@gmail.com>
Date: Wed, 23 Nov 2022 08:17:41 -0500
Subject: [PATCH] rng-tools updated to 6.15 (on RHEL9) seeing the following
denials:
node=localhost type=AVC msg=audit(1669206851.792:438): avc: denied { getattr } for pid=1008 comm="rngd" path="/usr/share/crypto-policies/FIPS/opensslcnf.txt" dev="dm-0" ino=401368 scontext=system_u:system_r:rngd_t:s0 tcontext=system_u:object_r:usr_t:s0 tclass=file permissive=1
node=localhost type=AVC msg=audit(1669206851.792:439): avc: denied { read } for pid=1008 comm="rngd" name="opensslcnf.config" dev="dm-0" ino=401368 scontext=system_u:system_r:rngd_t:s0 tcontext=system_u:object_r:usr_t:s0 tclass=file permissive=1
node=localhost type=AVC msg=audit(1669206851.792:439): avc: denied { open } for pid=1008 comm="rngd" path="/usr/share/crypto-policies/FIPS/opensslcnf.txt" dev="dm-0" ino=401368 scontext=system_u:system_r:rngd_t:s0 tcontext=system_u:object_r:usr_t:s0 tclass=file permissive=1
rngd now drops privlidges rather than having user/group set in .service file:
node=localhost type=AVC msg=audit(1669206851.856:440): avc: denied { setgid } for pid=1008 comm="rngd" capability=6 scontext=system_u:system_r:rngd_t:s0 tcontext=system_u:system_r:rngd_t:s0 tclass=capability permissive=1
node=localhost type=AVC msg=audit(1669206851.881:441): avc: denied { setuid } for pid=1008 comm="rngd" capability=7 scontext=system_u:system_r:rngd_t:s0 tcontext=system_u:system_r:rngd_t:s0 tclass=capability permissive=1
node=localhost type=AVC msg=audit(1669206851.910:442): avc: denied { setcap } for pid=1008 comm="rngd" scontext=system_u:system_r:rngd_t:s0 tcontext=system_u:system_r:rngd_t:s0 tclass=process permissive=1
Signed-off-by: Dave Sugar <dsugar100@gmail.com>
---
policy/modules/services/rngd.te | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/policy/modules/services/rngd.te b/policy/modules/services/rngd.te
index f33d6a401..d317520ee 100644
--- a/policy/modules/services/rngd.te
+++ b/policy/modules/services/rngd.te
@@ -20,8 +20,8 @@ files_runtime_file(rngd_runtime_t)
# Local policy
#
-allow rngd_t self:capability { ipc_lock sys_admin };
-allow rngd_t self:process { setsched getsched signal };
+allow rngd_t self:capability { ipc_lock setgid setuid sys_admin };
+allow rngd_t self:process { getsched setcap setsched signal };
allow rngd_t self:fifo_file rw_fifo_file_perms;
allow rngd_t self:unix_stream_socket { accept listen };
@@ -37,6 +37,7 @@ dev_rw_tpm(rngd_t)
dev_write_rand(rngd_t)
files_read_etc_files(rngd_t)
+files_read_usr_files(rngd_t)
logging_send_syslog_msg(rngd_t)