Bug 1590210

Summary: selinux preventing clamdscan
Product: [Fedora] Fedora Reporter: Dr I J Ormshaw <ian_ormshaw>
Component: selinux-policy-targetedAssignee: Lukas Vrabec <lvrabec>
Status: CLOSED NOTABUG QA Contact: Ben Levenson <benl>
Severity: high Docs Contact:
Priority: unspecified    
Version: 28CC: dwalsh
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Hardware: x86_64   
OS: Linux   
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Last Closed: 2018-06-23 10:40:21 UTC Type: Bug
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Clamd config file none

Description Dr I J Ormshaw 2018-06-12 08:33:34 UTC 
Created attachment 1450355 [details]
Clamd config file

Description of problem:

With selinux enabled clamdscan produses the following error

[ian@WM-ADVMSTECH-03 ~]$ clamdscan .
/home/ian/.: lstat() failed: Permission denied. ERROR

Version-Release number of selected component (if applicable):

This appears only to be a problem with server edition.  The KDE spin does not exhibit the same problem

How reproducible:

Steps to Reproduce:
1. Install clamd and clamav
2. run clamdscan .

Actual results:

[ian@WM-ADVMSTECH-03 ~]$ sudo setenforce 1
[ian@WM-ADVMSTECH-03 ~]$ clamdscan .
/home/ian/.: lstat() failed: Permission denied. ERROR

----------- SCAN SUMMARY -----------
Infected files: 0
Total errors: 1
Time: 0.001 sec (0 m 0 s)

Expected results:

[ian@WM-ADVMSTECH-03 ~]$ clamdscan .
/home/ian/.: OK

----------- SCAN SUMMARY -----------
Infected files: 0
Time: 24.393 sec (0 m 24 s)
[ian@WM-ADVMSTECH-03 ~]$ 


Additional info:

The expected results were obtained  after the following command.

sudo setenforce 0
Comment 1 Dr I J Ormshaw 2018-06-12 08:40:18 UTC 
The following command

ausearch -m avc --start recent

gives


----
time->Tue Jun 12 09:28:52 2018
type=AVC msg=audit(1528792132.849:796): avc:  denied  { open } for  pid=2598 comm="clamd" path="/home/ian/.ssh" dev="dm-0" ino=16807248 scontext=system_u:system_r:antivirus_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1
----
time->Tue Jun 12 09:28:52 2018
type=AVC msg=audit(1528792132.849:795): avc:  denied  { read } for  pid=2598 comm="clamd" name=".ssh" dev="dm-0" ino=16807248 scontext=system_u:system_r:antivirus_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1
Comment 2 Daniel Walsh 2018-06-23 10:40:21 UTC 
This is not something we would want to allow by default.  This basically allows a tool that is reading untrusted content to read valuable secrets in users home directories.  

If you want to allow this then you need to create a custom policy and load it.

ausearch -m avc --start recent | audit2allow -M myantivirus
semodule -i myantivirus.pp