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incorrectly failing for a multiple DNS rule

Open 2000rosser opened this issue 1 year ago • 0 comments

Description of problem:

I am trying to harden UBI 8 base images using the openscap tool. The scanner has a rule: xccdf_org.ssgproject.content_rule_network_configure_name_resolution which checks the /etc/resolv.conf file for multiple DNS Servers. The test fails but when I check the content of that file from inside the image there are 4 nameservers. The test to check this is a regex which when put into a regex tester with the output of resolv.conf returns 4 matches (expected). I have checked the file permissions and file is readable by all.

Any help would be very much appreciated.

SCAP Security Guide Version:

OpenSCAP command line tool (oscap) 1.3.8
Copyright 2009--2021 Red Hat Inc., Durham, North Carolina.

==== Supported specifications ====
SCAP Version: 1.3
XCCDF Version: 1.2
OVAL Version: 5.11.1
CPE Version: 2.3
CVSS Version: 2.0
CVE Version: 2.0
Asset Identification Version: 1.1
Asset Reporting Format Version: 1.1
CVRF Version: 1.1

==== Capabilities added by auto-loaded plugins ====
No plugins have been auto-loaded...

==== Paths ====
Schema files: /usr/share/openscap/schemas
Default CPE files: /usr/share/openscap/cpe

==== Inbuilt CPE names ====
Red Hat Enterprise Linux - cpe:/o:redhat:enterprise_linux:-
Red Hat Enterprise Linux 5 - cpe:/o:redhat:enterprise_linux:5
Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Community Enterprise Operating System 5 - cpe:/o:centos:centos:5
Community Enterprise Operating System 6 - cpe:/o:centos:centos:6
Community Enterprise Operating System 7 - cpe:/o:centos:centos:7
Community Enterprise Operating System 8 - cpe:/o:centos:centos:8
Fedora 32 - cpe:/o:fedoraproject:fedora:32
Fedora 33 - cpe:/o:fedoraproject:fedora:33
Fedora 34 - cpe:/o:fedoraproject:fedora:34
Fedora 35 - cpe:/o:fedoraproject:fedora:35

==== Supported OVAL objects and associated OpenSCAP probes ====
OVAL family   OVAL object                  OpenSCAP probe
----------    ----------                   ----------
independent   environmentvariable          probe_environmentvariable
independent   environmentvariable58        probe_environmentvariable58
independent   family                       probe_family
independent   filehash                     probe_filehash (MD5, SHA-1)
independent   filehash58                   probe_filehash58 (MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512)
independent   system_info                  probe_system_info
independent   textfilecontent              probe_textfilecontent
independent   textfilecontent54            probe_textfilecontent54
independent   variable                     probe_variable
independent   xmlfilecontent               probe_xmlfilecontent
independent   yamlfilecontent              probe_yamlfilecontent
linux         iflisteners                  probe_iflisteners
linux         inetlisteningservers         probe_inetlisteningservers
linux         partition                    probe_partition
linux         rpminfo                      probe_rpminfo
linux         rpmverify                    probe_rpmverify
linux         rpmverifyfile                probe_rpmverifyfile
linux         rpmverifypackage             probe_rpmverifypackage
linux         selinuxboolean               probe_selinuxboolean
linux         selinuxsecuritycontext       probe_selinuxsecuritycontext
linux         systemdunitdependency        probe_systemdunitdependency
linux         systemdunitproperty          probe_systemdunitproperty
linux         fwupdsecattr                 probe_fwupdsecattr
unix          dnscache                     probe_dnscache
unix          file                         probe_file
unix          fileextendedattribute        probe_fileextendedattribute
unix          gconf                        probe_gconf
unix          interface                    probe_interface
unix          password                     probe_password
unix          process                      probe_process
unix          process58                    probe_process58
unix          routingtable                 probe_routingtable
unix          runlevel                     probe_runlevel
unix          shadow                       probe_shadow
unix          symlink                      probe_symlink
unix          sysctl                       probe_sysctl
unix          uname                        probe_uname
unix          xinetd                       probe_xinetd

Operating System Version:

Red Hat Enterprise Linux 8

Steps to Reproduce:

  1. Create a Dockerfile and use ubi 8 as the base image
  2. Run the oscap-podman scan on the image using oscap-podman <image ID> xccdf eval --report report.html --results results.xml --profile stig /usr/share/xml/scap/ssg/content/ssg-rhel8-ds.xml
  3. view the report and notice the Multiple DNS rule failed (rule ID above)
  4. There is no remediation script for this but either way the test should pass since I had 4 nameservers

Actual Results:

Test failed

Expected Results:

Test passed

Additional Information/Debugging Steps:

2000rosser avatar Feb 22 '24 17:02 2000rosser