Forum: Cfengine Help
Subject: Re: FW: Weird permissions with Cfengine.
Author: berntjernberg
Link to topic: https://cfengine.com/forum/read.php?3,21620,21654#msg-21654
Hi,
I don't know if this is the solution to my problem but Cfengine seem to
remove read permission on files in /var were a ZFS acl i set.
Via an acl an application user may read /var/cron/log, /var/adm/sulog
and /var/adm/loginlog.
I use this code. I run a similar bundle to remove write for other on all files
in /var/tmp and /tmp.
I use Community 3.1.4.
body file_select by_umf(user,mode,files)
{
search_owners => { "$(user)" };
search_mode => { "$(mode)" };
path_name => { @(files) };
file_types => { "reg" };
file_result => "!path_name.mode.owner.file_types";
}
#
# Remove all but whitelisted suid root files.
#
bundle agent manage_root_suid_files
{
vars:
!suid_files_lockfile|(Hr01_Q3|Hr05_Q3|Hr09_Q3|Hr13_Q3|Hr17_Q3|Hr21_Q3)::
"dir_list" slist => { @(g.suid_dir_list) };
"exclude_dirs" slist => { @(g.suid_excl_dir_list) };
"allow_files" slist => { @(g.suid_allow_list) };
classes:
"suid_files_lockfile" expression =>
isplain("/var/run/cfe_suid_files.lck");
files:
!suid_files_lockfile|(Hr01_Q3|Hr05_Q3|Hr09_Q3|Hr13_Q3|Hr17_Q3|Hr21_Q3)::
"$(dir_list)"
file_select => by_umf("root","u+s","@(allow_files)"),
depth_search => recurse_ignore("inf","@(exclude_dirs)"),
action => policy("fix"),
comment => "Allow only whitelisted setuid root files",
transformer => "$(g.chmod) u-s $(this.promiser)";
methods:
!suid_files_lockfile::
"Create lockfile" usebundle => touch("/var/run/cfe_suid_files.lck");
}
bundle common g
{
#
# Directories to search for suid root files.
#
"suid_dir_list" slist => {
"/usr/bin",
"/usr/sbin",
"/sbin",
"/var"
};
#
# Directories to exclude while searching for suid root files.
#
"suid_excl_dir_list" slist => {
"/opt/OV",
"/opt/oracle",
"/var/opt/OV",
"/var/sadm/pkg",
"/var/sadm/patch",
"/var/sun",
"/var/run"
};
#
# Allowed suid files.
#
"suid_allow_list" slist => {
"/usr/bin/at",
"/usr/bin/atq",
"/usr/bin/atrm",
"/usr/bin/crontab",
"/usr/bin/pfexec",
"/usr/sbin/ping",
"/usr/lib/pt_chmod"
};
}
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