rq1
n00b
Joined: 23 Feb 2015
Posts: 1
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 Posted: Wed Feb 25, 2015 4:37 am Post subject: SELinux denials, init not loading in enforcing mode |
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Hi everybody,
I'm issuing painful SELinux denials on systemd (tested with openrc too, and the exact same thing happened, no trolls plz  ) while in enforcing mode. It does not launch, and if I `setenforce 1` after systemd has completely loaded, I can't start/stop services, inter alia, due to permission denials.
I even tried to allow them by creating a policy module, but nothing changed (manually and via audit2allow).
Some info:
systemd is correctly linked to libselinux
id -Z fires correct security contexts
modules are "correctly loaded and enabled" (semodule -l)
I followed to the letter SELinux/Installation guide
| Code: |
# cat audit.log | head
type=DAEMON_START msg=audit(1424829806.362:7333): auditd start, ver=2.2.2 format=raw kernel=3.17.7-hardened-r1 auid=4294967295 pid=259 subj=system_u:system_r:init_t res=success
type=AVC msg=audit(1424829827.687:711): avc: denied { sendto } for pid=192 comm="login" path="/run/systemd/journal/dev-log" scontext=system_u:system_r:local_login_t tcontext=system_u:system_r:init_t tclass=unix_dgram_socket permissive=1
type=AVC msg=audit(1424829827.687:712): avc: denied { net_admin } for pid=192 comm="login" capability=12 scontext=system_u:system_r:local_login_t tcontext=system_u:system_r:local_login_t tclass=capability permissive=1
type=AVC msg=audit(1424829827.687:713): avc: denied { connectto } for pid=192 comm="login" path="/run/dbus/system_bus_socket" scontext=system_u:system_r:local_login_t tcontext=system_u:system_r:init_t tclass=unix_stream_socket permissive=1
type=AVC msg=audit(1424829827.687:714): avc: denied { read } for pid=110 comm="systemd-journal" name="exe" dev="proc" ino=6844 scontext=system_u:system_r:init_t tcontext=system_u:system_r:local_login_t tclass=lnk_file permissive=1
type=AVC msg=audit(1424829827.688:715): avc: denied { nlmsg_relay } for pid=182 comm="dbus-daemon" scontext=system_u:system_r:init_t tcontext=system_u:system_r:init_t tclass=netlink_audit_socket permissive=1
type=USER_AVC msg=audit(1424829827.688:716): pid=182 uid=108 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t msg='avc: denied { send_msg } for msgtype=method_call interface=org.freedesktop.DBus member=Hello dest=org.freedesktop.DBus spid=192 scontext=system_u:system_r:local_login_t tcontext=system_u:system_r:init_t tclass=dbus exe="/usr/bin/dbus-daemon" sauid=108 hostname=? addr=? terminal=?'
type=USER_AVC msg=audit(1424829827.691:717): pid=182 uid=108 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t msg='avc: denied { send_msg } for msgtype=method_return dest=:1.5 spid=181 tpid=192 scontext=system_u:system_r:init_t tcontext=system_u:system_r:local_login_t tclass=dbus exe="/usr/bin/dbus-daemon" sauid=108 hostname=? addr=? terminal=?'
type=AVC msg=audit(1424829827.693:718): avc: denied { unlink } for pid=181 comm="systemd-logind" name="2.ref" dev="tmpfs" ino=6861 scontext=system_u:system_r:init_t tcontext=system_u:object_r:init_var_run_t tclass=fifo_file permissive=1
type=AVC msg=audit(1424829827.694:719): avc: denied { execute_no_trans } for pid=270 comm="kworker/u4:2" path="/usr/lib64/systemd/systemd-cgroups-agent" dev="sda4" ino=370451 scontext=system_u:system_r:kernel_t tcontext=system_u:object_r:lib_t tclass=file permissive=1 |
full audit log here : http://pastebin.com/NFWgaAMh
I'll update the post with system info and config.
I hope that's not a stupid mistake 
Thank you for reading.
Rq1.
Edit:
| Code: | # emerge --info
Portage 2.2.14 (python 2.7.9-final-0, hardened/linux/amd64/no-multilib/selinux, gcc-4.9.2, glibc-2.19-r1, 3.17.7-hardened-r1 x86_64)
=================================================================
System uname: Linux-3.17.7-hardened-r1-x86_64-Intel-R-_Core-TM-2_Duo_CPU_P8600_@_2.40GHz-with-gentoo-2.2
KiB Mem: 3776604 total, 3047276 free
KiB Swap: 4296700 total, 4296700 free
Timestamp of tree: Tue, 24 Feb 2015 20:45:01 +0000
ld GNU ld (Gentoo 2.24 p1.4) 2.24
app-shells/bash: 4.2_p53
dev-lang/perl: 5.20.1-r4
dev-lang/python: 2.7.9-r1, 3.3.5-r1
dev-util/pkgconfig: 0.28-r1
sys-apps/baselayout: 2.2
sys-apps/openrc: 0.13.11
sys-apps/sandbox: 2.6-r1
sys-devel/autoconf: 2.69
sys-devel/automake: 1.13.4
sys-devel/binutils: 2.24-r3
sys-devel/gcc: 4.9.2
sys-devel/gcc-config: 1.7.3
sys-devel/libtool: 2.4.4
sys-devel/make: 4.0-r1
sys-kernel/linux-headers: 3.16 (virtual/os-headers)
sys-libs/glibc: 2.19-r1
Repositories: gentoo
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe -march=native -fomit-frame-pointer"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -pipe -march=native -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox selinux sesandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="ftp://gentoo.mirrors.ovh.net/gentoo-distfiles ftp://mirrors.linuxant.fr/distfiles.gentoo.org ftp://mirror.switch.ch/mirror/gentoo"
LANG="fr_FR.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY=""
SYNC="rsync://rsync2.fr.gentoo.org/gentoo-portage"
USE="acl amd64 berkdb bzip2 cli cracklib crypt cxx dri fortran gdbm hardened iconv ipv6 justify libav mmx modules ncurses networkmanager nls nptl open_perms openmp pam pax_kernel pcre peer_perms readline selinux session sse sse2 ssl systemd tcpd ubac unconfined unicode urandom xattr xtpax zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx sse sse2 sse3 ssse3 sse4 sse4a sse4_1" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="nouveau" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON |
| Code: | # id -Z
root:sysadm_r:sysadm_t |
While loading the audit2allow generated policy :
| Code: | # semodule -i locpol.pp
libsepol.check_assertion_helper: neverallow violated by allow kernel_t kernel_t:process { setcurrent }; <-- this should allow systemd to load...
libsemanage.semanage_expand_sandbox: Expand module failed
semodule: Failed!
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