On 17/07/17 20:15, Stephen Isard wrote:
> On two SL7.3 systems where I have set exim as my mta alternative, I am
> getting a lot of entries in /var/log/messages saying "SELinux is
> preventing /usr/bin/exim from search access on the directory net", with
> the usual accompanying "if you believe that exim should be allowed..."
> stuff, but the logs don't explain what call to exim triggered the messages.
> 
> Sealert -l tells me
> 
> Raw Audit Messages
> type=AVC msg=audit(1500313603.937:268): avc:  denied { search } for
> pid=3097 comm="exim" name="net" dev="proc" ino=7154
> scontext=system_u:system_r:exim_t:s0
> tcontext=system_u:object_r:sysctl_net_t:s0 tclass=dir
> 
> type=SYSCALL msg=audit(1500313603.937:268): arch=x86_64 syscall=open
> success=no exit=EACCES a0=7ff03baef4b0 a1=80000 a2=1b6 a3=24 items=0
> ppid=781 pid=3097 auid=4294967295 uid=0 gid=93 euid=0 suid=0 fsuid=0
> egid=93 sgid=93 fsgid=93 tty=(none) ses=4294967295 comm=exim
> exe=/usr/sbin/exim subj=system_u:system_r:exim_t:s0 key=(null)
> 
> which doesn't seem to be much help.
> 
> Searches turn up two Centos 7 reports,
> https://bugs.centos.org/view.php?id=13247 and
> https://bugs.centos.org/view.php?id=12913 that look as if they might be
> the same thing with different mta alternatives, but no response to either.

Yes, this is exim trying to read some files in /proc/sys/net, starting
with scanning the directory.  I'd suggest reporting this as an bug in
the Red Hat bug tracker, file it under selinux-policy component - that
team should be able to figure out if this is a bug or not.  My quick
search there didn't turn up anything in particular.


-- 
kind regards,

David Sommerseth