Bug 1586352 - python: SELinux is preventing /usr/sbin/httpd from write access on the file /etc/letsencrypt/.certbot.lock
Summary: python: SELinux is preventing /usr/sbin/httpd from write access on the file /...
Keywords:
Status: NEW
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: certbot
Version: epel7
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Nick Bebout
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
: 1729813 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-06-06 04:48 UTC by Sergio Basto
Modified: 2020-11-03 02:53 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed:
Type: Bug


Attachments (Terms of Use)
var_log_messages.txt (1.41 MB, text/plain)
2018-06-07 04:17 UTC, Sergio Basto
no flags Details
ausearch.txt (1.11 MB, text/plain)
2018-06-07 04:18 UTC, Sergio Basto
no flags Details

Description Sergio Basto 2018-06-06 04:48:15 UTC
Description of problem:

just run: certbot --apache and check /var/log/messages



Version-Release number of selected component (if applicable):
certbot-0.24.0-1.el7.noarch


More info :
ausearch -x /usr/sbin/httpd --raw | audit2allow -D -M my-httpd

Suggests (I think) : 
semanage fcontext -a -t httpd_var_lib_t /var/lib/letsencrypt/.certbot.lock
restorecon -R -v /var/lib/letsencrypt/.certbot.lock

Comment 1 Eli Young 2018-06-06 15:46:22 UTC
What uservare you trying to run certbot as?

Comment 2 Eli Young 2018-06-06 20:55:53 UTC
To provide some context for my question, certbot normally expects to run as root. Furthermore, httpd normally won't be invoking certbot, so this shouldn't be a problem. What are you doing that causes this to happen?

Comment 3 Sergio Basto 2018-06-06 21:57:02 UTC
(In reply to Eli Young from comment #1)
> What uservare you trying to run certbot as?

root ,  sorry for the delay

Comment 4 Sergio Basto 2018-06-07 00:33:02 UTC
to be clear I run as root : 
certbot --apache 

I have httpd running with a super simple configuration 
/etc/httpd/conf.d/site.conf 

<VirtualHost *:80>
    ServerName site.name.country
    ErrorLog logs/site.name.country-error_log
    CustomLog logs/site.name.country-access_log common
</VirtualHost>

Comment 5 Eli Young 2018-06-07 04:03:27 UTC
Could you post the syslog and audit messages you’re seeing that illustrate the error?

Comment 6 Sergio Basto 2018-06-07 04:17:07 UTC
Created attachment 1448593 [details]
var_log_messages.txt

cat /var/log/messages | grep SELinux > var_log_messages.txt

Comment 7 Sergio Basto 2018-06-07 04:18:04 UTC
Created attachment 1448594 [details]
ausearch.txt

ausearch -x /usr/sbin/httpd --raw > ausearch.txt

is enough ?

Comment 8 Sergio Basto 2018-07-27 12:12:07 UTC
more info 

found 5 alerts in /var/log/audit/audit.log
--------------------------------------------------------------------------------

SELinux is preventing /usr/sbin/httpd from write access on the file /etc/letsencrypt/.certbot.lock.

*****  Plugin leaks (86.2 confidence) suggests   *****************************

If you want to ignore httpd trying to write access the .certbot.lock file, because you believe it should not need this access.
Then you should report this as a bug.  
You can generate a local policy module to dontaudit this access.
Do
# ausearch -x /usr/sbin/httpd --raw | audit2allow -D -M my-httpd
# semodule -i my-httpd.pp

*****  Plugin catchall (14.7 confidence) suggests   **************************

If you believe that httpd should be allowed write access on the .certbot.lock file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'httpd' --raw | audit2allow -M my-httpd
# semodule -i my-httpd.pp


Additional Information:
Source Context                unconfined_u:system_r:httpd_t:s0
Target Context                unconfined_u:object_r:etc_t:s0
Target Objects                /etc/letsencrypt/.certbot.lock [ file ]
Source                        httpd
Source Path                   /usr/sbin/httpd
Port                          <Unknown>
Host                          <Unknown>
Source RPM Packages           httpd-2.4.6-80.el7.centos.1.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-192.el7_5.4.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     xxxx
Platform                      Linux xxxx 3.10.0-862.3.2.el7.x86_64
                              #1 SMP Mon May 21 23:36:36 UTC 2018 x86_64 x86_64
Alert Count                   20
First Seen                    2018-04-27 17:19:26 WEST
Last Seen                     2018-07-27 12:47:43 WEST
Local ID                      0c2ad820-6b7b-4ba9-a422-7a59ac577708

Raw Audit Messages
type=AVC msg=audit(1532692063.265:5968): avc:  denied  { write } for  pid=3915 comm="httpd" path="/etc/letsencrypt/.certbot.lock" dev="dm-0" ino=583456 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=unconfined_u:object_r:etc_t:s0 tclass=file


type=AVC msg=audit(1532692063.265:5968): avc:  denied  { write } for  pid=3915 comm="httpd" path="/var/log/letsencrypt/.certbot.lock" dev="dm-0" ino=25547078 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=unconfined_u:object_r:var_log_t:s0 tclass=file


type=AVC msg=audit(1532692063.265:5968): avc:  denied  { write } for  pid=3915 comm="httpd" path="/var/lib/letsencrypt/.certbot.lock" dev="dm-0" ino=8528454 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=unconfined_u:object_r:cert_t:s0 tclass=file


type=SYSCALL msg=audit(1532692063.265:5968): arch=x86_64 syscall=execve success=yes exit=0 a0=16eb330 a1=16e6cb0 a2=16e7f90 a3=7fff91aff700 items=0 ppid=3913 pid=3915 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=585 comm=httpd exe=/usr/sbin/httpd subj=unconfined_u:system_r:httpd_t:s0 key=(null)

Hash: httpd,httpd_t,etc_t,file,write

Comment 9 Eli Young 2019-07-19 19:36:11 UTC
*** Bug 1729813 has been marked as a duplicate of this bug. ***

Comment 10 Fedora Admin user for bugzilla script actions 2020-11-03 02:53:47 UTC
This package has changed maintainer in the Fedora.
Reassigning to the new maintainer of this component.


Note You need to log in before you can comment on or make changes to this bug.