Re: ifconfig SELinux alert in Fedora 11

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On 06/23/2009 05:11 PM, Paul Howarth wrote:
On Mon, 22 Jun 2009 10:37:10 +0100
Paul Howarth <paul@xxxxxxxxxxxx> wrote:

  
On 22/06/09 07:58, Paul Howarth wrote:
    
On Sun, 21 Jun 2009 01:49:01 +0530
Rahul Sundaram<sundaram@xxxxxxxxxxxxxxxxx>  wrote:

      
On 06/20/2009 04:41 PM, Daniel J Walsh wrote:
        
On 06/19/2009 05:54 AM, Rahul Sundaram wrote:
Is it continuing to happen or was this a one time occurrence.  The
only code that I imagine opens and reads /selinux/mls is
libselinux and this opens it, reads the value and closes the file
in the same function call, so it can not leak.
          
It happens everytime I connect to a CDMA network via NetworkManager
and run vpnc.

Rahul
        
I've just had a very similar denial, when starting openvpn via
NetworkManager:

type=AVC msg=audit(1245653684.772:27): avc:  denied  { read } for
pid=5486 comm="openvpn" name="mls" dev=selinuxfs ino=12
scontext=system_u:system_r:openvpn_t:s0
tcontext=system_u:object_r:security_t:s0 tclass=file type=SYSCALL
msg=audit(1245653684.772:27): arch=c000003e syscall=2 success=no
exit=-13 a0=7fff5652e270 a1=0 a2=7fff5652e27c a3=fffffff8 items=0
ppid=5475 pid=5486 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="openvpn"
exe="/usr/sbin/openvpn" subj=system_u:system_r:openvpn_t:s0
key=(null)

Didn't stop openvpn working.
      
Just got this one too, after running "rndc querylog" to turn on
named's query logging from a root shell.

type=AVC msg=audit(1245663191.793:115): avc:  denied  { read } for 
pid=21774 comm="rndc" name="mls" dev=selinuxfs ino=12 
scontext=unconfined_u:unconfined_r:ndc_t:s0-s0:c0.c1023 
tcontext=system_u:object_r:security_t:s0 tclass=file
type=SYSCALL msg=audit(1245663191.793:115): arch=c000003e syscall=2 
success=no exit=-13 a0=7fffa1a717d0 a1=0 a2=7fffa1a717dc a3=fffffff8 
items=0 ppid=14800 pid=21774 auid=500 uid=0 gid=0 euid=0 suid=0
fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts4 ses=5 comm="rndc"
exe="/usr/sbin/rndc"
subj=unconfined_u:unconfined_r:ndc_t:s0-s0:c0.c1023 key=(null)
    

/usr/sbin/rndc is linked against libselinux, which ties in with
Stephen's explanation of the openvpn/vpnc issue too.

I'm adding these to local policy for now:

selinux_dontaudit_read_fs(ifconfig_t)
selinux_dontaudit_read_fs(ndc_t)
selinux_dontaudit_read_fs(openvpn_t)

Paul.

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Fixed in selinux-policy-3.6.12-57.fc11
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