Bug 389841 - SELinux sendmail incorrect access denial
Summary: SELinux sendmail incorrect access denial
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy-targeted
Version: 8
Hardware: i386
OS: Linux
low
high
Target Milestone: ---
Assignee: Daniel Walsh
QA Contact: Ben Levenson
URL:
Whiteboard:
Keywords:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2007-11-19 00:21 UTC by John Mellor
Modified: 2007-12-13 20:24 UTC (History)
1 user (show)

(edit)
Clone Of:
(edit)
Last Closed: 2007-12-13 20:24:04 UTC


Attachments (Terms of Use)
settroubleshoot output (2.64 KB, text/plain)
2007-11-30 09:53 UTC, morgan read
no flags Details

Description John Mellor 2007-11-19 00:21:23 UTC
Description of problem:
SELinux is preventing sendmail (sendmail_t) "getattr" to /home/john
(unconfined_home_dir_t).
Version-Release number of selected component (if applicable):
selinux-policy-targeted-3.0.8-53.fc8
How reproducible:


Steps to Reproduce:
1. Fresh install of FC8.
2. Normal custimization of sendmail.cf and other config files.
3. Make
3.
  
Actual results:
See attached cut/paste from AVC window.
Expected results:
No AVC denial expected.
Additional info:
SummarySELinux is preventing sendmail (sendmail_t) "getattr" to /home/john
(unconfined_home_dir_t).Detailed DescriptionSELinux denied access requested by
sendmail. It is not expected that this access is required by sendmail and this
access may signal an intrusion attempt. It is also possible that the specific
version or configuration of the application is causing it to require additional
access.Allowing AccessSometimes labeling problems can cause SELinux denials. You
could try to restore the default system file context for /home/john, restorecon
-v /home/john If this does not work, there is currently no automatic way to
allow this access. Instead, you can generate a local policy module to allow this
access - see FAQ Or you can disable SELinux protection altogether. Disabling
SELinux protection is not recommended. Please file a bug report against this
package.Additional InformationSource
Context:  system_u:system_r:sendmail_t:s0Target
Context:  unconfined_u:object_r:unconfined_home_dir_t:s0Target
Objects:  /home/john [ dir ]Affected RPM Packages:  
Policy RPM:  selinux-policy-3.0.8-53.fc8Selinux Enabled:  TruePolicy
Type:  targetedMLS Enabled:  TrueEnforcing Mode:  PermissivePlugin
Name:  plugins.catchall_fileHost Name:  mellor.kw.netPlatform:  Linux
mellor.kw.net 2.6.23.1-49.fc8 #1 SMP Thu Nov 8 21:41:26 EST 2007 i686
athlonAlert Count:  1First Seen:  Sun 18 Nov 2007 06:43:17 PM ESTLast Seen:  Sun
18 Nov 2007 06:43:17 PM ESTLocal ID:  ddc0571b-8704-430b-a3bc-20adc2b9850bLine
Numbers:  Raw Audit Messages :avc: denied { getattr } for comm=sendmail dev=dm-0
path=/home/john pid=4542 scontext=system_u:system_r:sendmail_t:s0 tclass=dir
tcontext=unconfined_u:object_r:unconfined_home_dir_t:s0

Comment 1 Daniel Walsh 2007-11-19 15:15:47 UTC
Any idea why sendmail would be trying to look at /home/john?

Do you have something in the sendmail.cf that would point there?

Comment 2 morgan read 2007-11-30 09:53:11 UTC
Created attachment 273631 [details]
settroubleshoot output

Comment 3 morgan read 2007-11-30 09:53:52 UTC
Can confirm this bug, and confirmed (more or less) by others in same thread:
https://www.redhat.com/archives/fedora-selinux-list/2007-November/msg00092.html

No idea why send mail would want to look at /home/morgan but have /etc/alias set
so that user morgan should receive root's mail and evolution set up to collect
user morgan's mail from /var/spool/mail via evolution's "Standard Unix mbox
spool directory" Server Type

Seems to be preventing some mail from getting through as I'm getting some mail
delivery warnings returned to sender user root at user morgan

Attached (1 of 15) saved setroubleshoot output

Comment 4 Daniel Walsh 2007-11-30 14:16:54 UTC
You can allow this for now by executing 

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

Fixed in selinux-policy-3.0.8-62.fc8

Comment 5 John Mellor 2007-12-12 00:50:06 UTC
No new occurances, appears to be fixed as described.


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