[CentOS] Help with httpd userdir recovery

m.roth at 5-cent.us
Wed, 28 Dec 2016 18:53:04 -0000

Robert Moskowitz wrote:
> On 12/28/2016 05:11 AM, Todor Petkov wrote:
>> On Wed, Dec 28, 2016 at 5:18 AM, Robert Moskowitz <rgm at
htt-consult.com>
>> wrote:
>>> Which is why I wonder if there is some different config for the
C7.3
>>> version
>>> of apache.
>>>
>>> Or something with the C7-arm build...
>> Can you check for SELinux warnings/errors in /var/log/audit/audit.log?
>
> Good advice.  As I suspect the problem is with SELinux.
>
> So I tried an access.  What follows is the access_log entry, the
> error_log entry and the 3 entries in the audit.log:
>
> 192.168.160.12 - - [28/Dec/2016:11:59:10 -0500] "GET /~rgm/family/
> HTTP/1.1" 403 214 "-" "Mozilla/5.0 (X11; Fedora; Linux
x86_64; rv:50.0)
> Gecko/20100101 Firefox/50.0"
>
> [Wed Dec 28 11:59:10.294915 2016] [autoindex:error] [pid 2141]
> (13)Permission denied: [client 192.168.160.12:56456] AH01275: Can't
open
> directory for index: /home/rgm/public_html/family/
>
> type=AVC msg=audit(1482944350.289:339): avc:  denied  { read } for
> pid=2141 comm="httpd" name="family"
dev="sda3" ino=262199
> scontext=system_u:system_r:httpd_t:s0
> tcontext=unconfined_u:object_r:httpd_user_content_t:s0 tclass=dir
> permissive=0
>
> type=SYSCALL msg=audit(1482944350.289:339): arch=40000028 syscall=322
> per=800000 success=no exit=-13 a0=ffffff9c a1=80657458 a2=a4800 a3=0
> items=0 ppid=2135 pid=2141 auid=4294967295 uid=48 gid=48 euid=48 suid=48
> fsuid=48 egid=48 sgid=48 fsgid=48 tty=(none) ses=4294967295
comm="httpd"
> exe="/usr/sbin/httpd" subj=system_u:system_r:httpd_t:s0
key=(null)
>
> type=PROCTITLE msg=audit(1482944350.289:339):
> proctitle=2F7573722F7362696E2F6874747064002D44464F524547524F554E44
>
>
> I will say that after enabling selinux on this image per the
> instructions of the team doing the Centos7-arm builds, I got the
> following messages when I did things like 'setsebool -P
> httpd_enable_homedirs on':
>
> [ 2273.047017] SELinux:  Class binder not defined in policy.
> [ 2273.052531] SELinux: the above unknown classes and permissions will
> be allowed
>
>
> So something may well not be right with my SELinux.
>
Bang. I would suggest, at this point, that you might want to set selinux
into permissive mode, so you'll get the error messages from it, and can
work out fixes, but will let your system operate as you intend.
setselinux 0

Note that this is *temporary*, and will revert on reboot. To make it
permanent, you'd need to edit /etc/selinux/config.

      mark
     mark