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Bug 553342

Summary: net-misc/teamviewer-9.0.32150 does not work on hardened with mprotect
Product: Gentoo Linux Reporter: Sebastian Hamann <gentoo-bugs>
Component: HardenedAssignee: The Gentoo Linux Hardened Team <hardened>
Status: RESOLVED OBSOLETE    
Severity: normal CC: ap, marci_r, wschlich
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
Whiteboard:
Package list:
Runtime testing required: ---

Description Sebastian Hamann 2015-06-26 17:01:59 UTC 
Teamviewer (net-misc/teamviewer-9.0.32150) does not work on my hardened system.
The service and the GUI application are both killed by the hardened kernel:

grsec: denied RWX mmap of <anonymous mapping> by /opt/teamviewer9/tv_bin/teamviewerd[teamviewerd:22801] uid/euid:0/0 gid/egid:0/0, parent /sbin/init[init:1] uid/euid:0/0 gid/egid:0/0
grsec: denied RWX mmap of <anonymous mapping> by /opt/teamviewer9/tv_bin/wine/bin/wine-preloader[winemenubuilder:22979] uid/euid:1000/1000 gid/egid:1000/1000, parent /sbin/init[init:1] uid/euid:0/0 gid/egid:0/0

After disabling mprotect for the respective executables teamviewer works.

/opt/teamviewer9/tv_bin/wine/bin/wine-preloader:
	PT_PAX    : not found
	XATTR_PAX : --m--

/opt/teamviewer9/tv_bin/teamviewerd:
	PT_PAX    : not found
	XATTR_PAX : --m--


Obligatory emerge --info output:

Portage 2.2.18 (python 2.7.9-final-0, hardened/linux/amd64, gcc-4.8.4, glibc-2.20-r2, 3.18.9-hardened x86_64)
=================================================================
System uname: Linux-3.18.9-hardened-x86_64-Intel-R-_Core-TM-_i5_CPU_M_540_@_2.53GHz-with-gentoo-2.2
KiB Mem:     7956048 total,   4632288 free
KiB Swap:    8388604 total,   8268484 free
Timestamp of repository gentoo: Fri, 26 Jun 2015 14:45:01 +0000
sh bash 4.3_p33-r2
ld GNU ld (Gentoo 2.24 p1.4) 2.24
app-shells/bash:          4.3_p33-r2::gentoo
dev-lang/perl:            5.20.2::gentoo
dev-lang/python:          2.7.9-r1::gentoo, 3.3.5-r1::gentoo, 3.4.1::gentoo
dev-util/cmake:           2.8.12.2-r1::gentoo
dev-util/pkgconfig:       0.28-r2::gentoo
sys-apps/baselayout:      2.2::gentoo
sys-apps/openrc:          0.16.4::gentoo
sys-apps/sandbox:         2.6-r1::gentoo
sys-devel/autoconf:       2.13::gentoo, 2.69::gentoo
sys-devel/automake:       1.11.6-r1::gentoo, 1.13.4::gentoo, 1.14.1::gentoo
sys-devel/binutils:       2.24-r3::gentoo
sys-devel/gcc:            4.8.4::gentoo
sys-devel/gcc-config:     1.7.3::gentoo
sys-devel/libtool:        2.4.6::gentoo
sys-devel/make:           4.1-r1::gentoo
sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers)
sys-libs/glibc:           2.20-r2::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://rsync.de.gentoo.org/gentoo-portage
    priority: -1000

local
    location: /usr/local/portage
    masters: gentoo
    priority: 10

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -march=native -pipe -fomit-frame-pointer"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/init.d/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-O2 -march=native -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage-extra/distfiles"
EMERGE_DEFAULT_OPTS="--quiet-build=y"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news nodoc parallel-fetch parallel-install preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="ftp://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ ftp://de-mirror.org/gentoo/ http://mirror.netcologne.de/gentoo/"
LANG="de_DE.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j4"
PKGDIR="/usr/portage-extra/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_EXTRA_OPTS="--timeout 120 --exclude-from=/etc/portage/rsync_excludes --delete-excluded"
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"
USE="X acl acpi alsa amd64 bluetoth bzip2 cairo caps cdr cli consolekit cracklib crypt cxx dbus dri dvd dvdr exif fam filecaps flac gdbm gif gpm gtk hardened iconv ipv6 jpeg justify lcms libnotify mad mmx mmxext modules mp3 mp4 multilib ncurses networkmanager nls nptl ogg pam pango pax_kernel pcre pdf pie png policykit python readline sdl session smp spell sse sse2 sse4 ssl ssp startup-notification svg tcpd truetype udev udisks unicode upower urandom usb vim-syntax vorbis wifi x264 xattr xcb xml xtpax xv xvid zlib zsh-completion" 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="aes mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" 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" LINGUAS="de" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" RUBY_TARGETS="ruby19 ruby20" SANE_BACKENDS="plustek" USERLAND="GNU" VIDEO_CARDS="intel i915 vesa" 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, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, USE_PYTHON
Comment 1 Wolfram Schlich (RETIRED) gentoo-dev 2016-01-21 08:08:06 UTC 
@black, can you please retry using net-misc/teamviewer-11.0.53191 ?
Comment 2 Sebastian Hamann 2016-01-28 17:18:35 UTC 
Sorry, I can not test this as I do not use Teamviewer any more.
Comment 3 Andreas Prieß 2017-01-25 22:42:17 UTC 
Same problem here with net-misc/teamviewer-12.0.71510.

Same solution also: changing PaX settings for

/opt/teamviewer12/tv_bin/wine/bin/wine-preloader

XATTR_PAX : PemRS

Or just disable MPROTECT with default settings as was said before.

The daemon is starting without PaX settings. Don't know if it would crash with an active teamviewer session though. The GUI starts without problems.
Comment 4 Magnus Granberg gentoo-dev 2019-08-08 00:03:43 UTC 
Hardened-sources no longer in the tree