Hosts file access

Emmett Culley lst_manage at webengineer.com
Tue May 27 22:24:52 UTC 2014


On 05/22/2014 10:31 PM, Miroslav Grepl wrote:
> On 05/22/2014 06:35 PM, Emmett Culley wrote:
>> I am continually getting getattr and read AVC errors.  From my research, I believe it is because my hosts file gets modified each time I VPN into my work network.
>>
>> I cause the host names and IP addresses that are part of the internal work network to be appended to the hosts file upon the VPN connection and then restore the original hosts file upon disconnection.
>>
>> I have tried restorecon /etc/hosts, but I  still get the warnings. I have also done the mypol fixes suggested in the troubleshooting dialog's details page.  Nothing I do resolves this issue.
>>
>> How can I prevent these AVC errors?  Or at least properly modify my hosts file (and possibly others) the SELinux way?
>>
>> Emmett
>> -- 
>> selinux mailing list
>> selinux at lists.fedoraproject.org
>> https://admin.fedoraproject.org/mailman/listinfo/selinux
> What AVC message are you getting?
> 
> What OS?
> 
> Regards,
> Miroslav
> 

Linux (Fedora 20)

type=AVC msg=audit(1401200342.155:473): avc:  denied  { read } for  pid=5501 comm="httpd" name="hosts" dev="dm-0" ino=270007 scontext=system_u:system_r:httpd_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:admin_home_t:s0 tclass=file

AND

type=AVC msg=audit(1401195880.487:401): avc:  denied  { getattr } for  pid=1064 comm="chronyd" path="/etc/hosts" dev="dm-0" ino=270007 scontext=system_u:system_r:chronyd_t:s0 tcontext=unconfined_u:object_r:admin_home_t:s0 tclass=file


type=SYSCALL msg=audit(1401195880.487:401): arch=x86_64 syscall=fstat success=yes exit=0 a0=4 a1=7fff126bb590 a2=7fff126bb590 a3=0 items=0 ppid=1 pid=1064 auid=4294967295 uid=997 gid=996 euid=997 suid=997 fsuid=997 egid=996 sgid=996 fsgid=996 tty=(none) ses=4294967295 comm=chronyd exe=/usr/sbin/chronyd subj=system_u:system_r:chronyd_t:s0 key=(null)

Each of the errors are caused by attempts to access the hosts file.

Emmett



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