Samba AVC
Hi,
This is Centos 5.3 fully updated.
Im getting the following error from setroubleshoot
SELinux is preventing samba (smbd) "unlink" to ./log.cs244-34.old
(samba_log_t).
when samba tries to rotate the log files.
Running sealert I get the following ( edited )
Summary:
SELinux is preventing samba (smbd) "unlink" to ./log.cs244-24.old
(samba_log_t).
Detailed Description:
SELinux denied samba access to ./log.cs244-24.old. If you want to share this
directory with samba it has to have a file context label of samba_share_t. If
^^^^^^^^^^^^^
you did not intend to use ./log.cs244-24.old as a samba repository it could
indicate either a bug or it could signal a intrusion attempt.
Allowing Access:
You can alter the file context by executing chcon -R -t samba_share_t
'./log.cs244-24.old' You must also change the default file context files on
the
system in order to preserve them even on a full relabel. "semanage fcontext -a
-t samba_share_t './log.cs244-24.old'"
The following command will allow this access:
chcon -R -t samba_share_t './log.cs244-24.old'
Additional Information:
Source Context root:system_r:smbd_t
Target Context root:object_r:samba_log_t
Target Objects ./log.cs244-24.old [ file ]
Source smbd
Source Path /usr/sbin/smbd
Port <Unknown>
Host janus.x.y.z
Source RPM Packages samba-3.0.33-3.7.el5_3.1
Target RPM Packages
Policy RPM selinux-policy-2.4.6-203.el5
Selinux Enabled True
Policy Type targeted
MLS Enabled True
Enforcing Mode Enforcing
Plugin Name samba_share
Host Name janus.x.y.z
Platform Linux janus.x.y.z 2.6.18-128.7.1.el5 #1 SMP
Mon Aug 24 08:21:56 EDT 2009 x86_64 x86_64
Alert Count 53
First Seen Fri Sep 25 15:54:24 2009
Last Seen Tue Sep 29 15:55:25 2009
Local ID e4426abc-3b0b-4df2-a380-3f0fba344c63
Line Numbers
Raw Audit Messages
host=janus.x.y.z type=AVC msg=audit(1254236125.438:70641): avc: denied {
unlink } for pid=27420 comm="smbd" name="log.cs244-24.old" dev=sda5
ino=164076 scontext=root:system_r:smbd_t:s0
tcontext=root:object_r:samba_log_t:s0 tclass=file
host=janus.x.y.z type=SYSCALL msg=audit(1254236125.438:70641): arch=c000003e
syscall=82 success=no exit=-13 a0=2b1b457b5220 a1=7fffa9a7ba90 a2=1f a3=0
items=0 ppid=3787 pid=27420 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0
sgid=0 fsgid=0 tty=(none) ses=1675 comm="smbd" exe="/usr/sbin/smbd"
subj=root:system_r:smbd_t:s0 key=(null)
log.cs244-24.old is a file not a directory and it's located in
the /var/log/samba directory with permissions
system_u:object_r:samba_log_t samba
Any ideas,
Tony
--
Dept. of Comp. Sci.
University of Limerick.