proftpd AVC on Rawhide

[Paul Howarth]

On Wed, 01 Dec 2010 16:45:21 +0000
Paul Howarth <paul at city-fan.org> wrote:

> I've just been trying out proftpd on a Rawhide box with /var/run on 
> tmpfs, and got this AVC:
> 
> time->Wed Dec  1 16:33:16 2010
> type=SYSCALL msg=audit(1291221196.017:128): arch=40000003 syscall=5 
> success=no exit=-13 a0=1c3f6c a1=a0142 a2=180 a3=9665f78 items=0 
> ppid=1213 pid=1336 auid=500 uid=0 gid=500 euid=500 suid=500 fsuid=500 
> egid=500 sgid=500 fsgid=500 tty=(none) ses=8 comm="proftpd" 
> exe="/usr/sbin/proftpd" subj=system_u:system_r:ftpd_t:s0-s0:c0.c1023 
> key=(null)
> type=AVC msg=audit(1291221196.017:128): avc:  denied  { search } for 
> pid=1336 comm="proftpd" name="user" dev=tmpfs ino=12173 
> scontext=system_u:system_r:ftpd_t:s0-s0:c0.c1023 
> tcontext=system_u:object_r:var_auth_t:s0 tclass=dir
> 
> It's trying to look in /var/run/user I think.
> 
> I don't know why it was trying to do this (maybe related to 
> pam_systemd?) but it didn't seem to stop it working.

Here's another related one, with related logging:

==> /var/log/audit/audit.log <==  
type=USER_AUTH msg=audit(1291222006.187:44): user pid=1173 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:ftpd_t:s0-s0:c0.c1023 msg='op=PAM:authentication acct="paul" exe="/usr/sbin/proftpd" hostname=::ffff:10.9.2.1 addr=::ffff:10.9.2.1 terminal=/dev/ftpd1173 res=success'
type=USER_ACCT msg=audit(1291222006.196:45): user pid=1173 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:ftpd_t:s0-s0:c0.c1023 msg='op=PAM:accounting acct="paul" exe="/usr/sbin/proftpd" hostname=::ffff:10.9.2.1 addr=::ffff:10.9.2.1 terminal=/dev/ftpd1173 res=success'
type=LOGIN msg=audit(1291222006.197:46): login pid=1173 uid=0 old auid=4294967295 new auid=500 old ses=4294967295 new ses=2
type=AVC msg=audit(1291222006.198:47): avc:  denied  { getattr } for  pid=1173 comm="proftpd" path="/var/run/user" dev=tmpfs ino=12078 scontext=system_u:system_r:ftpd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:var_auth_t:s0 tclass=dir
type=SYSCALL msg=audit(1291222006.198:47): arch=40000003 syscall=196 success=no exit=-13 a0=360d64 a1=bfbb36ac a2=60fff4 a3=3 items=0 ppid=1065 pid=1173 auid=500 uid=0 gid=99 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=2 comm="proftpd" exe="/usr/sbin/proftpd" subj=system_u:system_r:ftpd_t:s0-s0:c0.c1023 key=(null)

==> /var/log/secure <==  
Dec  1 16:46:46 k9 proftpd: pam_systemd(proftpd:session): Failed to create runtime directory: Permission denied
Dec  1 16:46:46 k9 proftpd: pam_unix(proftpd:session): session opened for user paul by (uid=0)

Paul.