Rahul Sundaram wrote:
Tony Molloy wrote:
Hi,
I'm installing bugzilla from epel-5 onto a Centos-5 Server. I'm
getting the following AVC denied message:
Summary
SELinux prevented httpd reading and writing access to http files.
Detailed Description
SELinux prevented httpd reading and writing access to http files.
Ordinarily
httpd is allowed full access to all files labeled with http file
context.
This machine has a tightened security policy with the
httpd_unified turned
off, This requires explicit labeling of all files. If a file is
a cgi
script it needs to be labeled with httpd_TYPE_script_exec_t in
order to be
executed. If it is read only content, it needs to be labeled
httpd_TYPE_content_t, it is writable content. it needs to be labeled
httpd_TYPE_script_rw_t or httpd_TYPE_script_ra_t. You can use the
chcon
command to change these context. Please refer to the man page "man
httpd_selinux" or http://fedora.redhat.com/docs/selinux-apache-fc3
"TYPE"
refers toi one of "sys", "user" or "staff" or potentially other
script
types.
Allowing Access
Changing the "httpd_unified" boolean to true will allow this access:
"setsebool -P httpd_unified=1"
The following command will allow this access:
setsebool -P httpd_unified=1
Additional Information
Source Context root:system_r:httpd_bugzilla_script_t
Target Context root:object_r:httpd_tmp_t
Target Objects /tmp/.NSPR-AFM-6806-97520c8.0 (deleted)
[ file ]
Affected RPM Packages Policy RPM
selinux-policy-2.4.6-106.el5_1.3
Selinux Enabled True
Policy Type targeted
MLS Enabled True
Enforcing Mode Enforcing
Plugin Name plugins.httpd_unified
Host Name richmond.csis.ul.ie
Platform Linux richmond.csis.ul.ie
2.6.18-53.1.4.el5 #1 SMP
Fri Nov 30 00:45:16 EST 2007 i686 i686
Alert Count 21
Line Numbers
Raw Audit Messages
avc: denied { read, write } for comm="index.cgi" dev=sda6 egid=48 euid=48
exe="/usr/bin/perl" exit=0 fsgid=48 fsuid=48 gid=48 items=0
path=2F746D702F2E4E5
350522D41464D2D363830362D393735323063382E30202864656C6574656429 pid=12090
scontext=root:system_r:httpd_bugzilla_script_t:s0 sgid=48
subj=root:system_r:httpd_bugzilla_script_t:s0 suid=48 tclass=file
tcontext=root:object_r:httpd_tmp_t:s0 tty=(none) uid=48
This seems to a denial to r/w a file in /tmp
I can generate a local policy to allow this access with audit2allow
but what is the correct way to handle this.
The answer was within the report itself
# setsebool -P httpd_unified=1
What's probably needed is for the bugzilla policy to have:
allow httpd_bugzilla_script_t httpd_tmp_t:dir manage_dir_perms;
allow httpd_bugzilla_script_t httpd_tmp_t:file manage_file_perms;
files_tmp_filetrans(httpd_bugzilla_script_t,httpd_bugzilla_script_rw_t,{
dir file lnk_file sock_file fifo_file })
This is in line with existing policy for httpd_sys_script_t I believe
(and what I'm using in the fastcgi policy in mod_fcgid-selinux). It
should be possible to use bugzilla without having httpd_unified set.
Paul.
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