Bug 1907125 - SELinux is preventing chronyd from 'write' accesses on the sock_file io.systemd.Resolve.
Summary: SELinux is preventing chronyd from 'write' accesses on the sock_file io.syste...
Keywords:
Status: CLOSED DUPLICATE of bug 1900143
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: rawhide
Hardware: x86_64
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Zdenek Pytela
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: abrt_hash:302cd67bfeb2a252555a176d71e...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-12-13 05:27 UTC by Wilde Geist
Modified: 2020-12-14 21:16 UTC (History)
8 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2020-12-14 21:16:05 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Wilde Geist 2020-12-13 05:27:29 UTC
Description of problem:
The Spooks are fucking with me.

# ausearch -c 'chronyd' --raw | audit2allow -M my-chronyd
# semodule -X 300 -i my-chronyd.pp

[wildegeist@cyber-abattoir ~]$ gcc
gcc: fatal error: no input files
compilation terminated.
[wildegeist@cyber-abattoir ~]$ gccpp
bash: gccpp: command not found
[wildegeist@cyber-abattoir ~]$ pp,ping
bash: pp,ping: command not found
[wildegeist@cyber-abattoir ~]$ ping
ping: usage error: Destination address required
[wildegeist@cyber-abattoir ~]$ semodule x300-i-my-rsyslog.pp
At least one mode must be specified.
usage:  semodule [option]... MODE...
Manage SELinux policy modules.
MODES:
  -R, --reload		    reload policy
  -B, --build		    build and reload policy
  -D,--disable_dontaudit    Remove dontaudits from policy
  -i,--install=MODULE_PKG   install a new module
  -r,--remove=MODULE_NAME   remove existing module at desired priority
  -l[KIND],--list-modules[=KIND]  display list of installed modules
     KIND:  standard  list highest priority, enabled modules
            full      list all modules
  -X,--priority=PRIORITY    set priority for following operations (1-999)
  -e,--enable=MODULE_NAME   enable module
  -d,--disable=MODULE_NAME  disable module
  -E,--extract=MODULE_NAME  extract module
Options:
  -s,--store	   name of the store to operate on
  -N,-n,--noreload do not reload policy after commit
  -h,--help        print this message and quit
  -v,--verbose     be verbose
  -P,--preserve_tunables	Preserve tunables in policy
  -C,--ignore-module-cache	Rebuild CIL modules compiled from HLL files
  -p,--path        use an alternate path for the policy root
  -S,--store-path  use an alternate path for the policy store root
  -c, --cil extract module as cil. This only affects module extraction.
  -H, --hll extract module as hll. This only affects module extraction.
[wildegeist@cyber-abattoir ~]$ reload
bash: reload: command not found
[wildegeist@cyber-abattoir ~]$ 
SELinux is preventing chronyd from 'write' accesses on the sock_file io.systemd.Resolve.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that chronyd should be allowed write access on the io.systemd.Resolve sock_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 'chronyd' --raw | audit2allow -M my-chronyd
# semodule -X 300 -i my-chronyd.pp

Additional Information:
Source Context                system_u:system_r:chronyd_t:s0
Target Context                system_u:object_r:systemd_resolved_var_run_t:s0
Target Objects                io.systemd.Resolve [ sock_file ]
Source                        chronyd
Source Path                   chronyd
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
SELinux Policy RPM            selinux-policy-targeted-3.14.7-8.fc34.noarch
Local Policy RPM              selinux-policy-targeted-3.14.7-8.fc34.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 5.10.0-0.rc4.20201119gitc2e7554e1b
                              85.81.fc34.x86_64 #1 SMP Thu Nov 19 20:45:31 UTC
                              2020 x86_64 x86_64
Alert Count                   18
First Seen                    2020-12-12 22:22:53 CST
Last Seen                     2020-12-12 22:59:28 CST
Local ID                      472410d9-7f0a-47d5-ad0a-3d102c3409bc

Raw Audit Messages
type=AVC msg=audit(1607835568.68:570): avc:  denied  { write } for  pid=638 comm="chronyd" name="io.systemd.Resolve" dev="tmpfs" ino=1146 scontext=system_u:system_r:chronyd_t:s0 tcontext=system_u:object_r:systemd_resolved_var_run_t:s0 tclass=sock_file permissive=0


Hash: chronyd,chronyd_t,systemd_resolved_var_run_t,sock_file,write

Version-Release number of selected component:
selinux-policy-targeted-3.14.7-8.fc34.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.14.0
hashmarkername: setroubleshoot
kernel:         5.10.0-0.rc4.20201119gitc2e7554e1b85.81.fc34.x86_64
type:           libreport

Potential duplicate: bug 1900143

Comment 1 Milos Malik 2020-12-14 08:38:25 UTC
Yes, this bug is a duplicate of BZ#1900143.

Comment 2 Zdenek Pytela 2020-12-14 21:16:05 UTC

*** This bug has been marked as a duplicate of bug 1900143 ***


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