selinux stopping NetworkManager from doing its job.
Antonio Olivares
olivares14031 at yahoo.com
Wed Mar 25 22:20:33 UTC 2009
--- On Mon, 3/9/09, Antonio Olivares <olivares14031 at yahoo.com> wrote:
> From: Antonio Olivares <olivares14031 at yahoo.com>
> Subject: selinux stopping NetworkManager from doing its job.
> To: fedora-selinux-list at redhat.com
> Cc: fedora-test-list at redhat.com
> Date: Monday, March 9, 2009, 4:31 PM
> Dear fellow testers and selinux experts,
>
> selinux is stopping NetworkManager from doing its job. To
> get internet, I have to manually type # dhclient eth0
> and get internet connection.
>
>
> Summary:
>
> SELinux is preventing dhclient (dhcpc_t) "read
> write" unconfined_t.
>
> Detailed Description:
>
> SELinux denied access requested by dhclient. It is not
> expected that this access
> is required by dhclient and this access may signal an
> intrusion attempt. It is
> also possible that the specific version or configuration of
> the application is
> causing it to require additional access.
>
> Allowing Access:
>
> You can generate a local policy module to allow this access
> - see FAQ
> (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385)
> Or you can disable
> SELinux protection altogether. Disabling SELinux protection
> is not recommended.
> Please file a bug report
> (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi)
> against this package.
>
> Additional Information:
>
> Source Context
> unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023
> Target Context
> unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
> 023
> Target Objects socket [ unix_stream_socket ]
> Source dhclient
> Source Path /sbin/dhclient
> Port <Unknown>
> Host riohigh
> Source RPM Packages dhclient-4.1.0-10.fc11
> Target RPM Packages
> Policy RPM selinux-policy-3.6.8-1.fc11
> Selinux Enabled True
> Policy Type targeted
> MLS Enabled True
> Enforcing Mode Enforcing
> Plugin Name catchall
> Host Name riohigh
> Platform Linux riohigh
> 2.6.29-0.215.rc7.fc11.i586 #1 SMP
> Sun Mar 8 23:25:31 EDT 2009
> i686 athlon
> Alert Count 6
> First Seen Fri 06 Mar 2009 04:16:01 PM
> CST
> Last Seen Mon 09 Mar 2009 05:22:13 PM
> CST
> Local ID
> a9c1d6de-334d-4f45-99bb-470f0f97e3ff
> Line Numbers
>
> Raw Audit Messages
>
> node=riohigh type=AVC msg=audit(1236640933.104:39): avc:
> denied { read write } for pid=3313
> comm="dhclient" path="socket:[15009]"
> dev=sockfs ino=15009
> scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023
> tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
> tclass=unix_stream_socket
>
> node=riohigh type=SYSCALL msg=audit(1236640933.104:39):
> arch=40000003 syscall=11 success=yes exit=0 a0=85082b8
> a1=8517f20 a2=8517f60 a3=8517f20 items=0 ppid=3265 pid=3313
> auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0
> fsgid=0 tty=pts1 ses=1 comm="dhclient"
> exe="/sbin/dhclient"
> subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null)
>
>
> Guess it applies over here:
>
>
> Summary:
>
> SELinux is preventing NetworkManager (NetworkManager_t)
> "read write"
> unconfined_t.
>
> Detailed Description:
>
> SELinux denied access requested by NetworkManager. It is
> not expected that this
> access is required by NetworkManager and this access may
> signal an intrusion
> attempt. It is also possible that the specific version or
> configuration of the
> application is causing it to require additional access.
>
> Allowing Access:
>
> You can generate a local policy module to allow this access
> - see FAQ
> (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385)
> Or you can disable
> SELinux protection altogether. Disabling SELinux protection
> is not recommended.
> Please file a bug report
> (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi)
> against this package.
>
> Additional Information:
>
> Source Context
> unconfined_u:system_r:NetworkManager_t:s0
> Target Context
> unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
> 023
> Target Objects socket [ unix_stream_socket ]
> Source NetworkManager
> Source Path /usr/sbin/NetworkManager
> Port <Unknown>
> Host riohigh
> Source RPM Packages
> NetworkManager-0.7.0.99-1.fc11
> Target RPM Packages
> Policy RPM selinux-policy-3.6.7-2.fc11
> Selinux Enabled True
> Policy Type targeted
> MLS Enabled True
> Enforcing Mode Enforcing
> Plugin Name catchall
> Host Name riohigh
> Platform Linux riohigh
> 2.6.29-0.203.rc7.fc11.i586 #1 SMP
> Wed Mar 4 18:03:29 EST 2009
> i686 athlon
> Alert Count 5
> First Seen Mon 23 Feb 2009 07:23:54 AM
> CST
> Last Seen Fri 06 Mar 2009 04:15:00 PM
> CST
> Local ID
> f192ed25-15af-43fd-aa2e-524cca16b88a
> Line Numbers
>
> Raw Audit Messages
>
> node=riohigh type=AVC msg=audit(1236377700.684:236): avc:
> denied { read write } for pid=14462
> comm="NetworkManager"
> path="socket:[26116]" dev=sockfs ino=26116
> scontext=unconfined_u:system_r:NetworkManager_t:s0
> tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
> tclass=unix_stream_socket
>
> node=riohigh type=AVC msg=audit(1236377700.684:236): avc:
> denied { read write } for pid=14462
> comm="NetworkManager"
> path="socket:[26116]" dev=sockfs ino=26116
> scontext=unconfined_u:system_r:NetworkManager_t:s0
> tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
> tclass=unix_stream_socket
>
> node=riohigh type=AVC msg=audit(1236377700.684:236): avc:
> denied { read write } for pid=14462
> comm="NetworkManager"
> path="socket:[26116]" dev=sockfs ino=26116
> scontext=unconfined_u:system_r:NetworkManager_t:s0
> tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
> tclass=unix_stream_socket
>
> node=riohigh type=SYSCALL msg=audit(1236377700.684:236):
> arch=40000003 syscall=11 success=yes exit=0 a0=84f2ee0
> a1=84f2e30 a2=84f2268 a3=84f2e30 items=0 ppid=14461
> pid=14462 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0
> sgid=0 fsgid=0 tty=pts1 ses=10
> comm="NetworkManager"
> exe="/usr/sbin/NetworkManager"
> subj=unconfined_u:system_r:NetworkManager_t:s0 key=(null)
>
>
>
>
> I do not get eth0 active upon starting up, since selinux
> stops NetworkManager from getting IP automagically :(.
>
> Regards,
>
>
> Antonio
>
>
>
>
>
> --
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I have used selinux=0 to troubleshoot this, and crontab now works(with selinux disabled), and also NetworkManager was not doing its job, I don't know what did it, but /etc/sysconfig/network-scripts/ifcfg-eth0 was modified and now it should work. Here's what I did:
checked that I could see what is in my crontab( now I don't get message that pam configuration), I wondered what was going on?
[olivares at riohigh ~]$ crontab -l
30 17 * * 1-5 ~/alarm &> /dev/null
30 21 * * 1-5 killall -9 /usr/bin/mplayer &> /dev/null
32 23 * * 1-5 /usr/bin/poweroff &> /dev/null
Good, one down, several more to go:
[olivares at riohigh ~]$ su -
Password:
[root at riohigh ~]# service NetworkManager stop
Stopping NetworkManager daemon: [ OK ]
[root at riohigh ~]# service NetworkManager start
Setting network parameters... [ OK ]
Starting NetworkManager daemon: [ OK ]
[root at riohigh ~]# cat /etc/sysconfig/
atd keyboard
auditd lm_sensors
authconfig modules/
bittorrent netconsole
bluetooth network
cbq/ networking/
clock network-scripts/
console/ nfs
cpuspeed nspluginwrapper
crond ntpd
crontab ntpdate
firstboot prelink
grub readonly-root
hsqldb rsyslog
httpd samba
hw-uuid saslauthd
i18n selinux
init sendmail
ip6tables smartmontools
ip6tables-config snmpd
iptables system-config-firewall
[root at riohigh ~]# cat /etc/sysconfig/net
netconsole network networking/ network-scripts/
[root at riohigh ~]# cat /etc/sysconfig/network
network networking/ network-scripts/
[root at riohigh ~]# cat /etc/sysconfig/network-scripts/
ifcfg-eth0 ifdown-sl ifup-post
ifcfg-lo ifdown-tunnel ifup-ppp
ifdown ifup ifup-routes
ifdown-bnep ifup-aliases ifup-sit
ifdown-eth ifup-bnep ifup-sl
ifdown-ippp ifup-eth ifup-tunnel
ifdown-ipsec ifup-ippp ifup-wireless
ifdown-ipv6 ifup-ipsec init.ipv6-global
ifdown-isdn ifup-ipv6 net.hotplug
ifdown-post ifup-ipx network-functions
ifdown-ppp ifup-isdn network-functions-ipv6
ifdown-routes ifup-plip
ifdown-sit ifup-plusb
was this
[root at riohigh ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# VIA Technologies, Inc. VT6102 [Rhine-II]
DEVICE=eth0
HWADDR=00:50:2c:a2:23:28
ONBOOT=no
NM_CONTROLLED=
[root at riohigh ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0
You have new mail in /var/spool/mail/root
I changed it to
[root at riohigh ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# VIA Technologies, Inc. VT6102 [Rhine-II]
DEVICE=eth0
HWADDR=00:50:2c:a2:23:28
ONBOOT=yes
NM_CONTROLLED=yes
I will restart system and hope that all is well and report back and see if selinux automatically relabels everything by itself, normally this happens when I have used selinux=0 booting parameter. It has been a while since I have to start network manually and it should work by itself.
Regards,
Antonio
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