2020626 – The sshd_enable_warning_banner rule creates bogus file /etc/ssh/sshd_config.d/hardening

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Bug 2020626 - The sshd_enable_warning_banner rule creates bogus file /etc/ssh/sshd_config.d/hardening

Summary: The sshd_enable_warning_banner rule creates bogus file /etc/ssh/sshd_config.d...

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	Red Hat Enterprise Linux 9
Classification:	Red Hat
Component:	scap-security-guide
Sub Component:
Version:	9.0
Hardware:	Unspecified
OS:	Unspecified
Priority:	unspecified
Severity:	unspecified
Target Milestone:	rc
Target Release:	---
Assignee:	Watson Yuuma Sato
QA Contact:	Milan Lysonek
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2021-11-05 12:40 UTC by Jan Pazdziora (Red Hat)
Modified:	2022-05-17 13:54 UTC (History)
CC List:	6 users (show)
Fixed In Version:	scap-security-guide-0.1.60-1.el9
Doc Type:	No Doc Update
Doc Text:
Clone Of:
Environment:
Last Closed:	2022-05-17 13:53:40 UTC
Type:	Bug
Target Upstream Version:
Embargoed:
Dependent Products:
Flags:	pm-rhel: mirror+

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Issue Tracker	RHELPLAN-101855	0	None	None	None	2021-11-05 12:41:14 UTC
Red Hat Product Errata	RHBA-2022:2610	0	None	None	None	2022-05-17 13:53:54 UTC

Description Jan Pazdziora (Red Hat) 2021-11-05 12:40:26 UTC

Description of problem:

When remediating with the sshd_enable_warning_banner rule in the OSPP profile, file /etc/ssh/sshd_config.d/hardening gets created which does affect the configuration because /etc/ssh/sshd_config states

Include /etc/ssh/sshd_config.d/*.conf

so it only processes files with .conf extension.

Polluting filesystem with with unnecessary empty files is not nice.

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

scap-security-guide-0.1.57-5.el9

How reproducible:

Deterministic.

Steps to Reproduce:
1. Check content of /etc/ssh/sshd_config.d with
ls -la /etc/ssh/sshd_config.d
2. Remediate the sshd_enable_warning_banner rule:
oscap xccdf eval --remediate --profile xccdf_org.ssgproject.content_profile_ospp --rule xccdf_org.ssgproject.content_rule_sshd_enable_warning_banner /usr/share/xml/scap/ssg/content/ssg-rhel9-ds.xml
3. Check content of /etc/ssh/sshd_config.d again with
ls -la /etc/ssh/sshd_config.d

Actual results:

total 8
drwx------. 2 root root 28 Nov 5 07:33 .
drwxr-xr-x. 4 root root 4096 Nov 5 07:35 ..
-rw-------. 1 root root 719 Oct 25 05:46 50-redhat.conf

WARNING: Datastream component 'scap_org.open-scap_cref_security-data-oval-com.redhat.rhsa-RHEL9.xml' points out to the remote 'https://www.redhat.com/security/data/oval/com.redhat.rhsa-RHEL9.xml'. Use '--fetch-remote-resources' option to download it.
WARNING: Skipping 'https://www.redhat.com/security/data/oval/com.redhat.rhsa-RHEL9.xml' file which is referenced from datastream
WARNING: Skipping ./security-data-oval-com.redhat.rhsa-RHEL9.xml file which is referenced from XCCDF content
Title Enable SSH Warning Banner
Rule xccdf_org.ssgproject.content_rule_sshd_enable_warning_banner
Ident CCE-90807-9
WARNING: Skipping ./security-data-oval-com.redhat.rhsa-RHEL9.xml file which is referenced from XCCDF content
Result fail
--- Starting Remediation ---
Title Enable SSH Warning Banner
Rule xccdf_org.ssgproject.content_rule_sshd_enable_warning_banner
Ident CCE-90807-9
Result fixed

total 12
drwx------. 2 root root 87 Nov 5 07:36 .
drwxr-xr-x. 4 root root 4096 Nov 5 07:36 ..
-rw-r--r--. 1 root root 18 Nov 5 07:36 00-complianceascode-hardening.conf
-rw-------. 1 root root 719 Nov 5 07:36 50-redhat.conf
-rw-r--r--. 1 root root 0 Nov 5 07:36 hardening

Expected results:

total 8
drwx------. 2 root root 28 Nov 5 07:33 .
drwxr-xr-x. 4 root root 4096 Nov 5 07:35 ..
-rw-------. 1 root root 719 Oct 25 05:46 50-redhat.conf

total 10
drwx------. 2 root root 87 Nov 5 07:36 .
drwxr-xr-x. 4 root root 4096 Nov 5 07:36 ..
-rw-r--r--. 1 root root 18 Nov 5 07:36 00-complianceascode-hardening.conf
-rw-------. 1 root root 719 Nov 5 07:36 50-redhat.conf

-- the hardening file not present.

Additional info:

Comment 4 Matěj Týč 2021-12-15 10:52:43 UTC

Fixed by a rebase in 0.1.58

Comment 18 errata-xmlrpc 2022-05-17 13:53:40 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (new packages: scap-security-guide), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:2610

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