Bug 548618 - SELinux is preventing the ftp daemon from writing files outside the home directory (untitled folder).
Summary: SELinux is preventing the ftp daemon from writing files outside the home dire...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 12
Hardware: i386
OS: Linux
low
medium
Target Milestone: ---
Assignee: Daniel Walsh
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: setroubleshoot_trace_hash:ed224e4c982...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-12-17 22:53 UTC by Bob hernandez
Modified: 2010-01-08 20:09 UTC (History)
2 users (show)

Fixed In Version: 3.6.32-66.fc12
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2010-01-05 22:59:27 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Bob hernandez 2009-12-17 22:53:44 UTC
Summary:

SELinux is preventing the ftp daemon from writing files outside the home
directory (untitled folder).

Detailed Description:

SELinux has denied the ftp daemon write access to directories outside the home
directory (untitled folder). Someone has logged in via your ftp daemon and is
trying to create or write a file. If you only setup ftp to allow anonymous ftp,
this could signal an intrusion attempt.

Allowing Access:

If you do not want SELinux preventing ftp from writing files anywhere on the
system you need to turn on the allow_ftpd_full_access boolean: "setsebool -P
allow_ftpd_full_access=1"

Fix Command:

setsebool -P allow_ftpd_full_access=1

Additional Information:

Source Context                unconfined_u:system_r:ftpd_t:s0-s0:c0.c1023
Target Context                unconfined_u:object_r:httpd_user_content_t:s0
Target Objects                untitled folder [ dir ]
Source                        vsftpd
Source Path                   /usr/sbin/vsftpd
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           vsftpd-2.2.0-6.fc12
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.32-56.fc12
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   allow_ftpd_full_access
Host Name                     (removed)
Platform                      Linux (removed) 2.6.31.6-166.fc12.i686 #1 SMP Wed
                              Dec 9 11:14:59 EST 2009 i686 i686
Alert Count                   5
First Seen                    Thu 17 Dec 2009 12:12:29 PM HST
Last Seen                     Thu 17 Dec 2009 12:12:30 PM HST
Local ID                      dadc8a55-39cb-493b-89ce-7fd0204066a2
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1261087950.905:30903): avc:  denied  { write } for  pid=2864 comm="vsftpd" name=756E7469746C656420666F6C646572 dev=dm-0 ino=221451 scontext=unconfined_u:system_r:ftpd_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:httpd_user_content_t:s0 tclass=dir

node=(removed) type=SYSCALL msg=audit(1261087950.905:30903): arch=40000003 syscall=5 success=no exit=-13 a0=2720968 a1=8c41 a2=1b6 a3=1b6 items=0 ppid=1 pid=2864 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="vsftpd" exe="/usr/sbin/vsftpd" subj=unconfined_u:system_r:ftpd_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  selinux-policy-3.6.32-56.fc12,allow_ftpd_full_access,vsftpd,ftpd_t,httpd_user_content_t,dir,write
audit2allow suggests:

#============= ftpd_t ==============
allow ftpd_t httpd_user_content_t:dir write;

Comment 1 Daniel Walsh 2009-12-18 12:45:39 UTC
You can add these rules for now using

# grep avc /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Fixed in selinux-policy-3.6.32-60.fc12.noarch

You do have the ftp_home_dir boolean turned on?

Comment 2 Fedora Update System 2009-12-22 21:55:16 UTC
selinux-policy-3.6.32-63.fc12 has been submitted as an update for Fedora 12.
http://admin.fedoraproject.org/updates/selinux-policy-3.6.32-63.fc12

Comment 3 Fedora Update System 2010-01-04 21:52:31 UTC
selinux-policy-3.6.32-66.fc12 has been submitted as an update for Fedora 12.
http://admin.fedoraproject.org/updates/selinux-policy-3.6.32-66.fc12

Comment 4 Fedora Update System 2010-01-05 22:48:31 UTC
selinux-policy-3.6.32-66.fc12 has been pushed to the Fedora 12 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update selinux-policy'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F12/FEDORA-2010-0184

Comment 5 Fedora Update System 2010-01-05 22:56:59 UTC
selinux-policy-3.6.32-63.fc12 has been pushed to the Fedora 12 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2010-01-08 20:03:14 UTC
selinux-policy-3.6.32-66.fc12 has been pushed to the Fedora 12 stable repository.  If problems still persist, please make note of it in this bug report.


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