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Bug 1723466

Summary:	Audit rules for OSPPv4.2 have changed and need to be updated in the OSPP SCAP profile
Product:	Red Hat Enterprise Linux 8	Reporter:	Matus Marhefka <mmarhefk>
Component:	scap-security-guide	Assignee:	Watson Yuuma Sato <wsato>
Status:	CLOSED ERRATA	QA Contact:	Matus Marhefka <mmarhefk>
Severity:	high	Docs Contact:
Priority:	high
Version:	8.1	CC:	ggasparb, mhaicman, openscap-maint, pvrabec
Target Milestone:	rc	Flags:	pm-rhel: mirror+
Target Release:	8.1
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	scap-security-guide-0.1.46-1.el8	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-11-05 21:17:09 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Matus Marhefka 2019-06-24 15:03:41 UTC

Description of problem:
Audit rules for OSPPv4.2 have changed and these changes need to be reflected also in the OSPP SCAP profile shipped in the scap-security-guide.

===============
$ diff -u 30-ospp-v42.rules /usr/share/doc/audit/rules/30-ospp-v42.rules
--- 30-ospp-v42.rules	2019-03-11 08:51:39.000000000 -0400
+++ /usr/share/doc/audit/rules/30-ospp-v42.rules	2019-06-07 17:08:36.000000000 -0400
@@ -71,19 +71,18 @@
 ## Group add delete modify. This is covered by pam. However, someone could
 ## open a file and directly create or modify a user, so we'll watch group and
 ## gshadow for writes
--a always,exit -F arch=b32 -S openat,open_by_handle_at -F a2&03 -F path=/etc/group -F auid>=1000 -F auid!=unset -F key=group-modify
--a always,exit -F arch=b64 -S openat,open_by_handle_at -F a2&03 -F path=/etc/group -F auid>=1000 -F auid!=unset -F key=group-modify
--a always,exit -F arch=b32 -S open -F a1&03 -F path=/etc/group -F auid>=1000 -F auid!=unset -F key=group-modify
--a always,exit -F arch=b64 -S open -F a1&03 -F path=/etc/group -F auid>=1000 -F auid!=unset -F key=group-modify
--a always,exit -F arch=b32 -S openat,open_by_handle_at -F a2&03 -F path=/etc/gshadow -F auid>=1000 -F auid!=unset -F key=group-modify
--a always,exit -F arch=b64 -S openat,open_by_handle_at -F a2&03 -F path=/etc/gshadow -F auid>=1000 -F auid!=unset -F key=group-modify
--a always,exit -F arch=b32 -S open -F a1&03 -F path=/etc/gshadow -F auid>=1000 -F auid!=unset -F key=group-modify
--a always,exit -F arch=b64 -S open -F a1&03 -F path=/etc/gshadow -F auid>=1000 -F auid!=unset -F key=group-modify
+-a always,exit -F path=/etc/passwd -F perm=wa -F auid>=1000 -F auid!=unset -F key=user-modify
+-a always,exit -F path=/etc/shadow -F perm=wa -F auid>=1000 -F auid!=unset -F key=user-modify
+-a always,exit -F path=/etc/group -F perm=wa -F auid>=1000 -F auid!=unset -F key=group-modify
+-a always,exit -F path=/etc/gshadow -F perm=wa -F auid>=1000 -F auid!=unset -F key=group-modify
+
 
 ## Use of special rights for config changes. This would be use of setuid
 ## programs that relate to user accts. This is not all setuid apps because
 ## requirements are only for ones that affect system configuration.
+-a always,exit -F path=/usr/sbin/unix_chkpwd -F perm=x -F auid>=1000 -F auid!=unset -F key=special-config-changes
 -a always,exit -F path=/usr/sbin/usernetctl -F perm=x -F auid>=1000 -F auid!=unset -F key=special-config-changes
+-a always,exit -F path=/usr/sbin/userhelper -F perm=x -F auid>=1000 -F auid!=unset -F key=special-config-changes
 -a always,exit -F path=/usr/sbin/seunshare -F perm=x -F auid>=1000 -F auid!=unset -F key=special-config-changes
 -a always,exit -F path=/usr/bin/mount -F perm=x -F auid>=1000 -F auid!=unset -F key=special-config-changes
 -a always,exit -F path=/usr/bin/newgrp -F perm=x -F auid>=1000 -F auid!=unset -F key=special-config-changes
@@ -99,6 +98,13 @@
 
 ## Audit log access
 -a always,exit -F dir=/var/log/audit/ -F perm=r -F auid>=1000 -F auid!=unset -F key=access-audit-trail
+## Attempts to Alter Process and Session Initiation Information
+-a always,exit -F path=/var/run/utmp -F perm=wa -F auid>=1000 -F auid!=unset -F key=session
+-a always,exit -F path=/var/log/btmp -F perm=wa -F auid>=1000 -F auid!=unset -F key=session
+-a always,exit -F path=/var/log/wtmp -F perm=wa -F auid>=1000 -F auid!=unset -F key=session
+
+## Attempts to modify MAC controls
+-a always,exit -F dir=/etc/selinux/ -F perm=wa -F auid>=1000 -F auid!=unset -F key=MAC-policy
 
 ## Software updates. This is entirely handled by rpm.
===============

Note: In the previous diff the `30-ospp-v42.rules` file is from the audit package shipped in the RHEL-8.0.


Version-Release number of selected component (if applicable):
scap-security-guide-0.1.44-2.el8.noarch
audit-3.0-0.11.20190507gitf58ec40.el8


How reproducible:
always


Steps to Reproduce:
1. diff between `/usr/share/doc/audit/rules/30-ospp-v42.rules` files shipped in audit package for RHEL-8.0 and the latest audit-3.0-0.11.20190507gitf58ec40.el8


Actual results:
OSPP SCAP profile IS NOT aligned with the `/usr/share/doc/audit/rules/30-ospp-v42.rules` shipped in the audit package


Expected results:
OSPP SCAP profile IS aligned with the `/usr/share/doc/audit/rules/30-ospp-v42.rules` shipped in the audit package

Comment 4 Watson Yuuma Sato 2019-09-05 14:39:03 UTC

The approach to check audit rules in 30-ospp-v42.rules has changed, so we don't need to keep track of changes in them.
The rule 'audit_rules_for_ospp' uses /usr/share/doc/audit/rules/30-ospp-v42.rules as its reference.


This is fixed by rebae to 0.1.46
Patch: https://github.com/ComplianceAsCode/content/pull/4680

Comment 8 errata-xmlrpc 2019-11-05 21:17:09 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, 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-2019:3453