From f5b0c2d2f6ed3f4039129eb7c76b91f6cf819498 Mon Sep 17 00:00:00 2001 From: Zdenek Pytela Date: Fri, 8 Jul 2022 15:20:59 +0200 Subject: [PATCH] Support using systemd-update-helper in rpm scriptlets Reference: https://gitbub.com/fedora-selinux/selinux-policy/commit/f5b0c2d2f6ed3f4039129eb7c76b91f6cf819498 Conflict: NA Addresses the following AVC denials, dontaudited by default: type=AVC msg=audit(07/08/2022 15:03:18.969:819) : avc: denied { read write } for pid=1 comm=systemd path=socket:[47621] dev="sockfs" ino=47621 scontext=system_u:system_r:init_t:s0 tcontext=unconfined_u:unconfined_r:rpm_script_t:s0-s0:c0.c1023 tclass=unix_stream_socket permissive=0 type=PROCTITLE msg=audit(07/08/2022 15:06:59.478:968) : proctitle=dbus-broker --log 4 --controller 9 --machine-id 31c23619ce0349e999f66291729cc4f6 --max-bytes 536870912 --max-fds 4096 --max-matc type=SYSCALL msg=audit(07/08/2022 15:06:59.478:968) : arch=x86_64 syscall=recvmsg success=yes exit=720 a0=0x10 a1=0x7ffe701a5890 a2=MSG_DONTWAIT|MSG_CMSG_CLOEXEC a3=0xffffffff items=0 ppid=561 pid=567 auid=unset uid=dbus gid=dbus euid=dbus suid=dbus fsuid=dbus egid=dbus sgid=dbus fsgid=dbus tty=(none) ses=unset comm=dbus-broker exe=/usr/bin/dbus-broker subj=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(07/08/2022 15:06:59.478:968) : avc: denied { read write } for pid=567 comm=dbus-broker path=socket:[51281] dev="sockfs" ino=51281 scontext=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:rpm_script_t:s0-s0:c0.c1023 tclass=unix_stream_socket permissive=0 The rpm_script_rw_stream_sockets() interface was added. Resolves: rhbz#2100528 Signed-off-by: lujie54 --- policy/modules/contrib/dbus.te | 4 ++++ policy/modules/contrib/rpm.if | 20 ++++++++++++++++++++ policy/modules/system/init.te | 1 + 3 files changed, 25 insertions(+) diff --git a/policy/modules/contrib/dbus.te b/policy/modules/contrib/dbus.te index ced5149..a0f5679 100644 --- a/policy/modules/contrib/dbus.te +++ b/policy/modules/contrib/dbus.te @@ -215,6 +215,10 @@ optional_policy(` ') optional_policy(` + rpm_script_rw_stream_sockets(system_dbusd_t) +') + +optional_policy(` snapper_read_inherited_pipe(system_dbusd_t) ') diff --git a/policy/modules/contrib/rpm.if b/policy/modules/contrib/rpm.if index 190f3e2..c6833ba 100644 --- a/policy/modules/contrib/rpm.if +++ b/policy/modules/contrib/rpm.if @@ -958,6 +958,7 @@ interface(`rpm_admin',` rpm_run($1, $2) ') +####################################### ## ## Allow the specified domain to ioctl rpm_script_t ## with a unix domain stream socket. @@ -975,3 +976,22 @@ interface(`rpm_script_ioctl_stream_sockets',` allow $1 rpm_script_t:unix_stream_socket ioctl; ') + +####################################### +## +## Allow the specified domain read and write to rpm_script_t +## over a unix domain stream socket. +## +## +## +## Domain allowed access. +## +## +# +interface(`rpm_script_rw_stream_sockets',` + gen_require(` + type rpm_script_t; + ') + + allow $1 rpm_script_t:unix_stream_socket { read write }; +') diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te index f772288..f12a937 100644 --- a/policy/modules/system/init.te +++ b/policy/modules/system/init.te @@ -521,6 +521,7 @@ optional_policy(` optional_policy(` rpm_read_db(init_t) rpm_script_ioctl_stream_sockets(init_t) + rpm_script_rw_stream_sockets(init_t) ') optional_policy(` -- 1.8.3.1